Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The notation-go package (Go module github.com/notaryproject/notation-go) versions 1.2.0-beta.1 up to but not including 1.3.0-rc.2 does not check the revocation status of certificates used by the timestamp authority during timestamp signature generation. An attacker in a man-in-the-middle position could potentially get a revoked or compromised certificate accepted to produce a countersignature, which could disrupt verification in CI/CD environments. Upgrade to version 1.3.0-rc.2 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.0 | Medium | 3.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0013, the 2nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:15 UTC First seen by agentprime
- 31 Oct 2026, 14:15 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-45v3-38pc-874v
- OSV: GHSA-45v3-38pc-874v
- github.com/notaryproject/notation-go/security/advisories/GHSA-45v3-38pc-874v
- nvd.nist.gov/vuln/detail/CVE-2024-56138
- github.com/notaryproject/notation-go/commit/e7005a6d13e5ba472d4e166fbb085152f909e102
- github.com/notaryproject/notation-go/commit/e99be1954a15673020150c5f8800b8174cd7428d
- github.com/notaryproject/notation-go
- pkg.go.dev/vuln/GO-2025-3381