Evidence used
- No CISA KEV confirmation is currently recorded.
- A structured source references public exploit or proof-of-concept material.
- EPSS is 0.18% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2026
CVE-2026-31802High confidence
node-tar Symlink Path Traversal via Drive-Relative Linkpath
isaacs · node-tar
Official source article: GitHub GHSA-9PPJ-QMQM-Q256 ↗. Check the applicable product and release in the original source.
8.2HighCVSS 4.0
Within 7 days
Patch availableHigh technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityHigh→Operational priority:High, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict local access and enforce least privilege on affected hosts.
- Increase monitoring for the attack path and post-exploitation behaviour described in the report.
Verification
- Confirm that the asset runs isaacs node-tar and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Distribution package intelligence
5 package statesRelease-specific package status
Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
Repository candidate not checked
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
| Distribution release | Source package | Vendor state | Fixed version | Evidence |
|---|---|---|---|---|
| Debian trixietrixie · source | node-tar | Not affectedDebian marks this release not affected (fixed-version marker 0). | Not published in this feed | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian bookwormbookworm · source | node-tar | Not affectedDebian marks this release not affected (fixed-version marker 0). | Not published in this feed | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian forkyforky · source | node-tar | Vendor fix publishedDebian records a fixed source-package version for this release. | 6.2.1+ds1+~cs6.1.13-10 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Debian sidsid · source | node-tar | Vendor fix publishedDebian records a fixed source-package version for this release. | 6.2.1+ds1+~cs6.1.13-10 | Debian Security Tracker ↗Source updated 6 Oct 2026 |
| Ubuntu 24.04 LTSnoble · standard archive | node-tar | Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing. | Not published in this feed | Canonical Ubuntu Security ↗Source updated 5 Oct 2026 |
Open-source package ranges2 source-attributed ranges
These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.
| Ecosystem and package | Affected range | First fixed version | Evidence |
|---|---|---|---|
| npmtar | <= 7.5.10 | 7.5.11 | GitHub advisory ↗upstream repository advisory · 10 Mar 2026 |
| npmtar | SEMVER: introduced 0; fixed 7.5.11 | 7.5.11 | OSV record ↗aggregator derived · 10 Sep 2026 |
Direct vendor intelligence
1 currentAuthoritative 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.
CVE-2026-31802 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitytar: tar: File overwrite via drive-relative symlink traversal
The vendor explicitly identifies these products as affected by this CVE.
- openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
- 3scale-amp2/system-rhel7 as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp2/system-rhel8 as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp2/system-rhel9 as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp20/system as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp21/system as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp22/system as a component of Red Hat 3scale API Management Platform 2
- Summary
- A flaw was found in tar. An attacker can exploit this vulnerability by crafting a malicious tar archive containing a drive-relative symlink. This symlink, such as C:../../../target.txt, can trick the tar utility into writing files outside the intended extraction directory during normal archive extraction, leading to unauthorized file overwrite.
- Remediation
- Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.
Patch available01
What, why and how
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
What
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
Why
Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.
How
An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
Why
Attacker-controlled path data is not constrained to the intended directory before the application accesses a file.
How
An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.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 Reference recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.
- Likely attack path
- local access → Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') → cause the confidentiality, integrity or availability impact described by the vendor
- Attack surface
- Local
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- None
- Attack complexity
- Low: no specialised conditions are recorded
- Security boundary
- Not a CVSS 4.0 base metric
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-22 ↗
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'). The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:NCommon Vulnerability Scoring System 4.0: 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.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VIHighVulnerable-system integrity: A successful attack can cause a major loss.VANoneVulnerable-system availability: No direct loss is represented by this metric.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SIHighSubsequent-system integrity: A successful attack can cause a major loss.SANoneSubsequent-system availability: No direct loss is represented by this metric.- Post-exploitation / living off the land
- The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
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
- openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift
- openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
- 3scale-amp2/system-rhel7 as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp2/system-rhel8 as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp2/system-rhel9 as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp20/system as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp21/system as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp22/system as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp24/system as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp25/system as a component of Red Hat 3scale API Management Platform 2
- 3scale-amp26/system as a component of Red Hat 3scale API Management Platform 2
- rhacm2/console-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2
- rhacm2/volsync-operator-bundle as a component of Red Hat Advanced Cluster Management for Kubernetes 2
- rhacm2/volsync-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2
- org.jolokia-jolokia-parent as a component of Red Hat AMQ Broker 7
- rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub
- tar.src as a component of Red Hat Enterprise Linux 6
- io.apicurio-apicurito as a component of Red Hat Fuse 7
- io.hawt-hawtio-online as a component of Red Hat Fuse 7
- io.hawt-project as a component of Red Hat Fuse 7
- io.syndesis-syndesis-parent as a component of Red Hat Fuse 7
- io.hawt-project as a component of Red Hat JBoss Enterprise Application Platform 7
- org.jboss.hal-hal-parent as a component of Red Hat JBoss Enterprise Application Platform 7
- org.keycloak-keycloak-parent as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack
- rhoai/odh-data-science-pipelines-argo-argoexec-rhel8 as a component of Red Hat OpenShift AI (RHOAI)
- rhoai/odh-data-science-pipelines-argo-workflowcontroller-rhel8 as a component of Red Hat OpenShift AI (RHOAI)
- and 10 more
- Fixed
- registry.redhat.io/devspaces/code-rhel9@sha256:b86a03ffcc1fc359116cc0ca231c64e5d612f047d41b5a2d44d1f3a9d880c14b_amd64 as a component of Red Hat OpenShift Dev Spaces 3.28
- registry.redhat.io/devspaces/code-rhel9@sha256:cbe05937b330c830b280fcde70ddc04e76fc01770f519db54385e62d3cdc4365_arm64 as a component of Red Hat OpenShift Dev Spaces 3.28
- registry.redhat.io/devspaces/code-rhel9@sha256:cc5228f1a81ab52552eff2f4b4147affa898ffa429a49f7fb47ca394e892c482_s390x as a component of Red Hat OpenShift Dev Spaces 3.28
- registry.redhat.io/devspaces/code-rhel9@sha256:d752b1a872d03c454c7a2e8a6141fe41df0a62d5e968be7a69f0203fefcb6559_ppc64le as a component of Red Hat OpenShift Dev Spaces 3.28
- registry.redhat.io/devspaces/dashboard-rhel9@sha256:0f5532354d096fca2b4b51e1184c5d219d9c51880873482437ddf64c197ceb1f_s390x as a component of Red Hat OpenShift Dev Spaces 3.28
- registry.redhat.io/devspaces/dashboard-rhel9@sha256:adea9256b3e9ff929f054325d167c4412c61d2d0e89b5975d751c261a3985414_arm64 as a component of Red Hat OpenShift Dev Spaces 3.28
- registry.redhat.io/devspaces/dashboard-rhel9@sha256:e10099e6dec84dd608b95679315fd09d6a8c377f57dabf68f5b3e1fdb12a10e5_ppc64le as a component of Red Hat OpenShift Dev Spaces 3.28
- registry.redhat.io/devspaces/dashboard-rhel9@sha256:fd8259ec2fe8fe72432e32186b2319bc0ef5eb1d25092b66b8f65dda04e783ac_amd64 as a component of Red Hat OpenShift Dev Spaces 3.28
- Action
- Before applying this update, make sure all previously released errata relevant to your system have been 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.
Official vendor articles3 stored documents
Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.
- Security Bulletin - April 21 2026 | Atlassian Support | Atlassian Documentation →Original publisher ↗Searchable text snapshot · Captured 27 Sep 2026Unable to load Security Bulletin - April 21 2026 Security Advisories & Bulletins November 2022: Atlassian Security Advisories Overview Archived Security Advisories Security Advisories for Apps July 2022: Atlassian Security Advisories Overview August 2022: Atlassian Security Advisories Overview January 2023: Securi
- Security Bulletin - May 19 2026 | Atlassian Support | Atlassian Documentation →Original publisher ↗Searchable text snapshot · Captured 27 Sep 2026Unable to load Security Bulletin - May 19 2026 Security Advisories & Bulletins November 2022: Atlassian Security Advisories Overview Archived Security Advisories Security Advisories for Apps July 2022: Atlassian Security Advisories Overview August 2022: Atlassian Security Advisories Overview January 2023: Security
- Security Bulletin - July 21 2026 | Atlassian Support | Atlassian Documentation →Original publisher ↗Searchable text snapshot · Captured 26 Sep 2026Unable to load Security Bulletin - July 21 2026 Security Advisories & Bulletins November 2022: Atlassian Security Advisories Overview Archived Security Advisories Security Advisories for Apps July 2022: Atlassian Security Advisories Overview August 2022: Atlassian Security Advisories Overview January 2023: Securit
04
Evidence and provenance
Published 9 Mar 2026 · Last source change 10 Mar 2026, 14:56 UTC · CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source FIRST · tracked since 2026-08-14
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2026-10403
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- < 7.5.11 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
- After
- < 7.5.11 · Fixed: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
- Remediation statusRemediation status changed from Awaiting fix to Patch available.Red Hat Product Security ↗
- Before
- Awaiting fix
- After
- Patch available
CVE published
Fixed release recorded from official guidance
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.