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CVE-2026-42018

HIGH 7.5 KNOWN EXPLOITED PoC CATALOGUED DETECTION TEMPLATE ALL-YEARS

Published 2026-08-12 · Last modified 2026-10-01 · JFROG · NVD: Analyzed

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

ACTIVELY EXPLOITED

Confirmed exploited in the wild — in CISA KEV since 2026-09-11. Patch or mitigate now.

Exploitation likelihood

9.8%chance of exploitation in 30 days · 96th percentile

● In CISA KEV (2026-09-11)● Catalogued PoC◆ SSVC: exploitation active, automatable yes

Impact if exploited

7.5CVSS 3.1 · HIGH · CNA

  • ConfidentialityHigh
  • IntegrityNone
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

Public PoC or exploit resources are catalogued below.

Listed by the named source; Vulnpedia has not tested these resources.

PoC data: JSON

Detection templates

Detection checks are listed separately from PoCs.

Resource commands

nuclei -id CVE-2026-42018 -u https://TARGETDetection template — review its checks and affected versions before use.
curl -s https://vulnpedia.com/cve/CVE-2026-42018/poc.jsonMachine-readable PoC index for this CVE (for automation).

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Jfrog

Products Artifactory

Weakness (CWE)

  • CWE-287: Improper Authentication

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References and research data (JSON)

Additional exploitation reports

Source-specific reports, separate from CISA KEV. Repeated observations from one source are not independent confirmations.

  • VulnCheck KEV · 2026-09-10T00:00:00Z

    Source guidance: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

    Source ransomware assessment: Unknown

    VulnCheck KEV · CVE-2026-42018 · Updated 2026-09-10T00:00:00Z
  • VulnCheck KEV · 2026-09-10T00:00:00ZVulnCheck KEV · CVE-2026-42018
  • VulnCheck KEV · 2026-09-11T00:00:00ZVulnCheck KEV · CVE-2026-42018

Known Affected Software Configurations

VendorProductVersion range
JfrogArtifactory< 7.111.20
JfrogArtifactory≥ 7.117.0 and < 7.117.27
JfrogArtifactory≥ 7.125.0 and < 7.125.19
JfrogArtifactory≥ 7.133.0 and < 7.133.28
JfrogArtifactory≥ 7.146.0 and < 7.146.8

All CVSS metrics

  • HIGH 7.5 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • HIGH 7.5 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Advisories

Technical & other

Sources: NVD · CVE.org · All sources and attribution · EPSS