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VulnerabilityPublished

CVE-2026-102289: zizmorcore zizmor · Sensitive Data in Logs

Affects zizmorcore zizmorSource CVE Database V5

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Not known to be exploited · CVSS 7.0 High · fixed in 1.28.0 : patch zizmorcore zizmor soon.

Data as of 9 Nov 2026, 21:49 UTC

CVSS 4.0 base score
7.0High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 4.07.0
Patch
Available – fixed in 1.28.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
zizmorcorezizmorAffected
  • =1.27.0
Fixed in–

AI-suggested

Upgrade to zizmor version 1.28.0 or later where this vulnerability is fixed. Until then, avoid enabling verbose or debug logging that serializes sensitive tokens. Use the --offline option which clears the token before logging. Restrict access to CI logs and support artifacts to trusted parties only to reduce exposure risk.

Description

CVE-2026-102289 is a vulnerability in zizmor version 1.27.0 where sensitive GitHub token credentials are logged in cleartext to stderr when debug logging is enabled. This occurs because the debug logging serializes the parsed application configuration including tokens supplied via environment variables or command-line options. Exposure of these tokens in logs can allow unauthorized parties who access the logs to misuse the credentials. The issue is fixed in version 1.28.0.

References

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