CVE-2025-25204: `gh attestation verify` returns incorrect exit code during verification if no attestations are present
Description
`gh` is GitHub’s official command line tool. Starting in version 2.49.0 and prior to version 2.67.0, under certain conditions, a bug in GitHub's Artifact Attestation cli tool `gh attestation verify` causes it to return a zero exit status when no attestations are present. This behavior is incorrect: When no attestations are present, `gh attestation verify` should return a non-zero exit status code, thereby signaling verification failure. An attacker can abuse this flaw to, for example, deploy malicious artifacts in any system that uses `gh attestation verify`'s exit codes to gatekeep deployments. Users are advised to update `gh` to patched version `v2.67.0` as soon as possible.
Classification
CVE ID: CVE-2025-25204
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.3
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N
Affected Products
Vendor: cli
Product: cli
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 18.4% (scored less or equal to compared to others)
EPSS Date: 2025-03-15 (when was this score calculated)
References
https://github.com/cli/cli/security/advisories/GHSA-fgw4-v983-mgp8https://github.com/cli/cli/issues/10418
https://github.com/cli/cli/pull/10421