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Full vulnerability report · 2026
CVE-2026-42018High confidence

JFrog Artifactory Improper Authentication Vulnerability

jfrog · artifactory

7.5HighCVSS 3.1
Recommended action
Mitigate now

CISA confirms exploitation in the wild and lists 2026-09-25 as the remediation due date.

Mitigation available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 11 Sep 2026

Evidence used

  • CISA confirms exploitation in the wild.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 9.80% for the current model date.

Compensating controls

  • Apply the linked authoritative mitigation while planning the permanent fix.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs jfrog artifactory and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  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: Within 3 daysRemediation target: Within 90 days

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.

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-2026-57388

CISA KEV mirrored by ENISA

JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 11 Sep 2026. Evidence sources: cisa_kev.
ENISA score
7.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionMitigate now

CISA confirms exploitation in the wild and lists 2026-09-25 as the remediation due date.

Mitigation available
01

What, why and how

JFrog Artifactory contains an improper authentication vulnerability that could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

What

JFrog Artifactory contains an improper authentication vulnerability that could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

Why

The affected component does not establish the requesting party's identity reliably before granting access.

How

An attacker operating through a network path 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

JFrog Artifactory contains an improper authentication vulnerability that could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

Why

The affected component does not establish the requesting party's identity reliably before granting access.

How

An attacker operating through a network path 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
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2026-09-11.

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
a network path → Improper Authentication → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
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-287 ↗

CWE-287: Improper Authentication. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/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.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing 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.
NetworkUnauthenticatedCWE-287CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-57388Known-exploited evidence recorded

JFrog Artifactory could return an internal anonymous-user token to an unauthenticated caller when anonymous access is disabled, potentially exposing sensitive resources.

Official EUVD record ↗
BSI · German · WID-SEC-2026-2808JFrog Artifactory: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in JFrog Artifactory ausnutzen, um die Authentifizierung zu umgehen, Berechtigungen zu erweitern, sich als Benutzer auszugeben, vertrauliche Informationen offenzulegen oder geschützte Daten zu manipulieren.

Official advisory ↗
Canadian Centre for Cyber Security · English · AV26-867JFrog security advisory (AV26-867) – Update 2

As of August 28, 2026, JFrog is affected by a vulnerability in the following product: Open-source reporting indicates that CVE-2026-82329 related to JFrog Artifactory is being exploited in the wild.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260819Security Bulletin 19 Aug 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 19 Aug 2026, published on 19 August 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
NBSZ-NKI · Hungarian · cve-2026-42018CVE-2026-42018

Adott identitás igénylés esetén, a program nem vagy nem megfelelően igazolja vissza az igény valódiságát.

Official advisory ↗
CSIRT Italia · Italian · jfrog-rilevato-sfruttamento-in-rete-delle-vulnerabilita-cve-2026-42016-e-cve-2026-42018-in-artifactoryJFrog: rilevato sfruttamento in rete delle vulnerabilità CVE-2026-42016 e CVE-2026-42018 in Artifactory

La vulnerabilità identificata tramite la CVE-2026-42018, di tipo "Authentication Bypass", e con CVSS 3.1 pari a 7.5, è dovuta ad un'errata convalida di parametri di input. Un attaccante remoto non autenticato potrebbe ottenere un token interno associato all'utente anonimo, anche quando l'accesso anonimo è disabilitato, al fine di eludere i meccanismi di autenticazione e accedere a informazioni riservate. La vulnerabilità identificata tramite la CVE-2026-42016, di tipo "Privilege Escalation", e con CVSS 3.1 pari a 8.1, è dovuta ad un'errata convalida di parametri di input relativa all'ambito di validità dei token. Un attaccante remoto con privilegi limitati potrebbe sfruttare tale vulnerabilità per utilizzare un token opportunamente predisposto al fine di eludere le restrizioni di autorizzazione e per elevare i privilegi utente.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-033307JFrog Ltd.のArtifactoryにおける認証に関する脆弱性

JFrog Artifactoryは、匿名アクセスが無効になっている場合でも、認証されていない呼び出し元に内部の匿名ユーザートークンを返してしまい、機密リソースが露出する可能性があります。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6953美 CISA 발표 주요 Exploit 정보공유(Update. 2026-09-11)

JFrog Artifactory Improper Authentication Vulnerability

Official advisory ↗
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.
Mitigation available
Affected
artifactory: < 7.111.20, 7.117.0 < 7.117.27, 7.125.0 < 7.125.19, 7.133.0 < 7.133.28, 7.146.0 < 7.146.8
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 12 Aug 2026 · Last source change 1 Oct 2026, 18:06 UTC · CWE-287 · Improper Authentication

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 2026-08-14
European sourceENISA EUVD · EUVD-2026-57388
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: cyber.gc.ca/jfrog-security-advisory-av26-867.
    Before
    remediation: cyber.gc.ca/jfrog-security-advisory-av26-867 · vendor advisory: docs.jfrog.com/jfrog-security-advisories
    After
    vendor advisory: docs.jfrog.com/jfrog-security-advisories
    reefs@jfrog.com ↗
  2. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    reefs@jfrog.com ↗
  3. BlackTree coverageBlackTree article coverage changed from no BlackTree article to 1 BlackTree article.
    Before
    no BlackTree article
    After
    1 BlackTree article
    BlackTree editorial ↗
  4. ENISA known-exploited stateENISA EUVD now records this CVE in its known-exploited dataset.
    Before
    not listed in ENISA EUVD known-exploited dataset
    After
    listed in ENISA EUVD known-exploited dataset (EUVD-2026-57388)
    ENISA EUVD ↗
  5. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: cyber.gc.ca/jfrog-security-advisory-av26-867.
    Before
    remediation: cyber.gc.ca/jfrog-security-advisory-av26-867 · vendor advisory: docs.jfrog.com/jfrog-security-advisories
    After
    vendor advisory: docs.jfrog.com/jfrog-security-advisories
    reefs@jfrog.com ↗
  6. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    reefs@jfrog.com ↗
  7. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    Canadian Centre for Cyber Security ↗
  8. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: docs.jfrog.com/jfrog-security-advisories.
    Before
    no authoritative guidance recorded
    After
    vendor advisory: docs.jfrog.com/jfrog-security-advisories
    reefs@jfrog.com ↗
  9. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 7.111.20; 7.117.0 < 7.117.27; 7.125.0 < 7.125.19; 7.133.0 < 7.133.28; 7.146.0 < 7.146.8 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    artifactory: < 7.111.20, 7.117.0 < 7.117.27, 7.125.0 < 7.125.19, 7.133.0 < 7.133.28, 7.146.0 < 7.146.8 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  10. CISA KEV stateCISA KEV now confirms exploitation in the wild.
    Before
    not listed in CISA KEV
    After
    listed in CISA KEV since 2026-09-11
    CISA KEV ↗
  11. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 7.146.8 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    < 7.111.20; 7.117.0 < 7.117.27; 7.125.0 < 7.125.19; 7.133.0 < 7.133.28; 7.146.0 < 7.146.8 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Remediation guidance recorded
ENISA EUVD · EUVD-2026-57388↗Canadian Centre for Cyber Security remediation guidance↗CISA KEV record↗CVE authority or vendor reference↗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-2026-42018 · cve.blacktree.nl