zizmor: Debug logging prints available GitHub credentials in cleartext

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102289
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-09 22:18:21 UTC
Updated2026-11-14 03:17:21 UTC
Descriptionzizmor 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.

Risk And Classification

Primary CVSS: v4.0 7 HIGH from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.002440000 probability, percentile 0.157880000 (date 2026-11-13)

Problem Types: CWE-532 | CWE-532 CWE-532: Insertion of Sensitive Information into Log File

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary7HIGHCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/C...
4.0CNADECLARED7HIGHCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
Active
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
High
Sub Integrity
High
Sub Availability
High

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Zizmorcore Zizmor affected = 1.27.0 Not specified

References

ReferenceSourceLinkTags
github.com/zizmorcore/zizmor/pull/2215 [email protected] github.com
github.com/zizmorcore/zizmor/commit/724d0e86f4c073c3dc64507fb6c39bc20e46... [email protected] github.com
github.com/zizmorcore/zizmor/security/advisories/GHSA-f42p-wjw5-97qh 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/zizmorcore/zizmor/commit/0731e01706af273be860d3d221e4d122e674... [email protected] github.com
github.com/zizmorcore/zizmor/releases/tag/v1.28.0 [email protected] github.com
github.com/zizmorcore/zizmor/pull/2213 [email protected] github.com
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