zizmor is a static analysis tool for CI/CD systems. In version 1.27.0, debug logging serializes the parsed application configuration with a derived Debug implementation for GitHubToken, causing credentials supplied through GH_TOKEN, GITHUB_TOKEN, ZIZMOR_GITHUB_TOKEN, --gh-token, --github-token, or --zizmor-github-token to be written to stderr in cleartext. A single -v or --verbose option or an applicable RUST_LOG directive enables the affected logging during normal online operation and --no-online-audits, while explicit --offline clears the token first. If another party can read a CI log, support artifact, terminal capture, or public bug report containing the output, the party can use the credential according to its scopes, repository access, and lifetime. This vulnerability is fixed in 1.28.0.
History

Tue, 10 Nov 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Zizmorcore
Zizmorcore zizmor
Vendors & Products Zizmorcore
Zizmorcore zizmor

Mon, 09 Nov 2026 21:45:00 +0000

Type Values Removed Values Added
Description zizmor is a static analysis tool for CI/CD systems. In version 1.27.0, debug logging serializes the parsed application configuration with a derived Debug implementation for GitHubToken, causing credentials supplied through GH_TOKEN, GITHUB_TOKEN, ZIZMOR_GITHUB_TOKEN, --gh-token, --github-token, or --zizmor-github-token to be written to stderr in cleartext. A single -v or --verbose option or an applicable RUST_LOG directive enables the affected logging during normal online operation and --no-online-audits, while explicit --offline clears the token first. If another party can read a CI log, support artifact, terminal capture, or public bug report containing the output, the party can use the credential according to its scopes, repository access, and lifetime. This vulnerability is fixed in 1.28.0.
Title zizmor: Debug logging prints available GitHub credentials in cleartext
Weaknesses CWE-532
References
Metrics cvssV4_0

{'score': 7, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-11-09T21:37:32.457Z

Updated: 2026-11-09T21:37:32.457Z

Reserved: 2026-09-28T20:11:16.659Z

Link: CVE-2026-102289

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-09T22:18:21.590

Modified: 2026-11-09T22:18:21.590

Link: CVE-2026-102289

cve-icon Redhat

No data.