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Full vulnerability report · 2026
CVE-2026-73834High confidence

Must-gather: must-gather: embedded secret data in acm wrapper crs collected without redaction

Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.11

Official source article: Red Hat RHSA-2026:60386 ↗. Check the applicable product and release in the original source.

5.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Low, lowered one band.downgradedsince 5 Sep 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.11% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11 and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-73834 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitymust-gather: must-gather: embedded Secret data in ACM wrapper CRs collected without redaction
24 fixed

The vendor explicitly identifies these products or versions as containing the fix.

  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:24eff4577e1ed40847386c33368368e067f08d55b6d1765a63a995916ce898d5_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:53574712a69ee477fccc606b42079241023a529712900c0dd9e3bc2e32835c2f_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:6285b61d1f754c13ef58c771f8aab6066e68887cfc361931105e3d65de4a73b6_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:fca14ac81964e48c86a7a22ba44d0e9f4c87046fdcf9ed6de9ceaa15946dcb45_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:1748b946b4014bea8a0e81ef50d77e67c7ef6cd05f648e77b26ba66bdfbb2e8a_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.13
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:9aff94fe2abec282d7a670476a7507cf2bb0b74ce76093b45d2d50a8f2f93a65_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.13
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:9b3a592331ef86de0c65c2745b47399b165b94d6a40e9ea3b6f8497682d5d12a_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.13
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:fe12e6f4e6770ac8a64886247d689be8e6c840cc70455ef3d75bb4e4019fba1d_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.13
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:0c1dac37ae3d1f2131593f8bdea8d42b89f835afa3bb557674440ca7592db79b_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.14
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:529c6d3484373799cc6301e23dca0164e3fb729efd3f0923b343d115613a332e_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.14
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:6cdc2a5c0686aef3f2584311881b1dc116a62fb48793aef6d1de82f43ac29401_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.14
  • registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:cf01f83df37d3f292a9e3fb9fd3d44e49173f6423b58704aa8d96d0eeed9c871_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.14
Summary
A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kubernetes. Certain ACM wrapper Custom Resources that embed Secret data are collected without redaction. When an administrator runs must-gather, credentials and tokens are captured in cleartext in the resulting archive, potentially exposing sensitive information to anyone with access to the archive.
Remediation
Before you apply this update, make sure all previously released errata that are relevant to your system are applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-60958

No EUVD known-exploited evidence

A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kubernetes. Certain ACM wrapper Custom Resources that embed Secret data are collected without redaction. When an administrator runs must-gather, credentials and tokens are captured in cleartext in the resulting archive, potentially exposing sensitive information to anyone with access to the archive.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
5.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kubernetes. Certain ACM wrapper Custom Resources that embed Secret data are collected without redaction. When an administrator runs must-gather, credentials and tokens are captured in cleartext in the resulting archive, potentially exposing sensitive information to anyone with access to the archive.

What

A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kubernetes. Certain ACM wrapper Custom Resources that embed Secret data are collected without redaction. When an administrator runs must-gather, credentials and tokens are captured in cleartext in the resulting archive, potentially exposing sensitive information to anyone with access to the archive.

Why

The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.

What

A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kubernetes. Certain ACM wrapper Custom Resources that embed Secret data are collected without redaction. When an administrator runs must-gather, credentials and tokens are captured in cleartext in the resulting archive, potentially exposing sensitive information to anyone with access to the archive.

Why

The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Cleartext Storage of Sensitive Information → obtain information outside the intended access boundary
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-312 ↗

CWE-312: Cleartext Storage of Sensitive Information. The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
CWE-312
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-60958Official EUVD mapping

A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kubernetes. Certain ACM wrapper Custom Resources that embed Secret data are collected without redaction. When an administrator runs must-gather, credentials and tokens are captured in cleartext in the resulting archive, potentially exposing sensitive information to anyone with access to the archive.

Official EUVD record ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
Action
Before you apply this update, make sure all previously released errata that are relevant to your system are applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 18 Aug 2026 · Last source change 5 Sept 2026, 17:08 UTC · CWE-312 · Cleartext Storage of Sensitive Information

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-23
European sourceENISA EUVD · EUVD-2026-60958
Product sourceCNA
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD awaiting enrichment

Missing structured fields: affected versions. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: 1787263322 < *; 1787260453 < *; 1787189811 < *; 1787238730 < *; 1787234748 < *; 1787228698 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: Red Hat Advanced Cluster Management for Kubernetes 2.11: 1787263322 < *; Red Hat Advanced Cluster Management for Kubernetes 2.13: 1787260453 < *; Red Hat Advanced Cluster Management for Kubernetes 2.14: 1787189811 < *; Red Hat Advanced Cluster Management for Kubernetes 2.15: 1787238730 < *; Red Hat Advanced Cluster Management for Kubernetes 2.16: 1787234748 < *; Red Hat Advanced Cluster Management for Kubernetes 2.17: 1787228698 < *
    CNA ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: 1787260453 < *; 1787238730 < *; 1787228698 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: 1787263322 < *; 1787260453 < *; 1787189811 < *; 1787238730 < *; 1787234748 < *; 1787228698 < *
    CNA ↗
  3. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-73834 to remediation: access.redhat.com/CVE-2026-73834.
    Before
    remediation: access.redhat.com/CVE-2026-73834
    After
    remediation: access.redhat.com/CVE-2026-73834
    Red Hat Product Security ↗
  4. Remediation statusRemediation status changed from Mitigation available to Patch available.
    Before
    Mitigation available
    After
    Patch available
    Red Hat Product Security ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    rhacm2/acm-must-gather-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2
    After
    Fixed: registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:24eff4577e1ed40847386c33368368e067f08d55b6d1765a63a995916ce898d5_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:53574712a69ee477fccc606b42079241023a529712900c0dd9e3bc2e32835c2f_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:6285b61d1f754c13ef58c771f8aab6066e68887cfc361931105e3d65de4a73b6_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:fca14ac81964e48c86a7a22ba44d0e9f4c87046fdcf9ed6de9ceaa15946dcb45_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.11; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:1748b946b4014bea8a0e81ef50d77e67c7ef6cd05f648e77b26ba66bdfbb2e8a_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.13; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:9aff94fe2abec282d7a670476a7507cf2bb0b74ce76093b45d2d50a8f2f93a65_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.13; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:9b3a592331ef86de0c65c2745b47399b165b94d6a40e9ea3b6f8497682d5d12a_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.13; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:fe12e6f4e6770ac8a64886247d689be8e6c840cc70455ef3d75bb4e4019fba1d_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.13; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:0c1dac37ae3d1f2131593f8bdea8d42b89f835afa3bb557674440ca7592db79b_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.14; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:529c6d3484373799cc6301e23dca0164e3fb729efd3f0923b343d115613a332e_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.14; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:6cdc2a5c0686aef3f2584311881b1dc116a62fb48793aef6d1de82f43ac29401_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.14; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:cf01f83df37d3f292a9e3fb9fd3d44e49173f6423b58704aa8d96d0eeed9c871_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.14; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:35fd593bcbeb209edd5c8f342d863f4e6661467f2427b42df882400d576dbdb7_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.15; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:71b09f020a8e1ee6b9ec9c53900a1c6d13207b581c4ac5e09b043dda46d975a9_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.15; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:b541cb5fa00a4ed2b00aa34b78c48b926c4dae6131f3cd5479b3c71acb1452bc_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.15; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:ec99abc6fbdf26383493cd32e05a152f480ce9a1bb0e9c5faae44df3946f1f77_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.15; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:46eb950072c37c25093cc114c08563e851f2358f184638f57060db2e1b4bbc31_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.16; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:5e4914b26e35928ead59dbc026ab77cc685aa8ca23db4f0f2189beba0e1d2514_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.16; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:6c9d1cd1d9cff40ac9560393ab966e77fbde06c10e24dd18c8b41dc8d92633f0_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.16; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:c310819b9413afc0d4e0fa67845d214354130a85929d797e20779cf911c2c253_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.16; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:695ec2d4c1ab04789403f79d0476525cd8407ed07e49a34552287933b98849f9_arm64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.17; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:c44138723651e19d03942f8a276ef99c6ef40200d22c19836c8146b1c7add8a2_amd64 as a component of Red Hat Advanced Cluster Management for Kubernetes 2.17; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:cfb91fc0bb98343b64e990aa640e33fe03abd326e124ca377f18a7c074be0921_s390x as a component of Red Hat Advanced Cluster Management for Kubernetes 2.17; registry.redhat.io/rhacm2/acm-must-gather-rhel9@sha256:df6dfcd12d42b95a9a401b7f468079ea61b062aa88a11b4031ebdc869ce4eb6b_ppc64le as a component of Red Hat Advanced Cluster Management for Kubernetes 2.17
    Red Hat Product Security ↗
  6. Vendor guidanceAuthoritative vendor guidance changed: removed vendor advisory: access.redhat.com/RHSA-2026:60386; removed vendor advisory: access.redhat.com/RHSA-2026:60389; 1 further removals.
    Before
    remediation: access.redhat.com/RHSA-2026:60386 · vendor advisory: access.redhat.com/RHSA-2026:60386 · vendor advisory: access.redhat.com/RHSA-2026:60389 · 1 more references
    After
    remediation: access.redhat.com/RHSA-2026:60386
    CNA ↗
  7. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:60386; added vendor advisory: access.redhat.com/RHSA-2026:60386; 2 further additions.
    Before
    no authoritative guidance recorded
    After
    remediation: access.redhat.com/RHSA-2026:60386 · vendor advisory: access.redhat.com/RHSA-2026:60386 · vendor advisory: access.redhat.com/RHSA-2026:60389 · 1 more references
    access.redhat.com ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    See the vendor and CVE records for the affected range. · Fixed: 1787260453 < *; 1787238730 < *; 1787228698 < *
    CNA ↗
  9. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    access.redhat.com ↗
  10. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-60958↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference · Red Hat RHSA-2026:60386↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-73834 · cve.blacktree.nl