---
id: CVE-2024-56138
aliases:
  - GHSA-45v3-38pc-874v
  - GO-2025-3381
title: >-
  notation-go's timestamp signature generation lacks certificate revocation
  check
summary: >-
  notation-go's timestamp signature generation lacks certificate revocation
  check
severity: medium
cvss: 4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
vendor: notaryproject
product: github.com/notaryproject/notation-go
ecosystem: go
affected:
  - 'github.com/notaryproject/notation-go >= 1.2.0-beta.1, < 1.3.0-rc.2'
patched:
  - github.com/notaryproject/notation-go 1.3.0-rc.2
published: '2025-01-13'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:21.902976341Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-45v3-38pc-874v'
references:
  - url: >-
      https://github.com/notaryproject/notation-go/security/advisories/GHSA-45v3-38pc-874v
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-56138'
  - url: >-
      https://github.com/notaryproject/notation-go/commit/e7005a6d13e5ba472d4e166fbb085152f909e102
  - url: >-
      https://github.com/notaryproject/notation-go/commit/e99be1954a15673020150c5f8800b8174cd7428d
  - url: 'https://github.com/notaryproject/notation-go'
  - url: 'https://pkg.go.dev/vuln/GO-2025-3381'
tags:
  - osv
  - go
epss: 0.00132
epssPercentile: 0.0227
ingestedAt: '2026-09-12T03:13:01.751Z'
---

## Overview

This issue was identified during Quarkslab's audit of the timestamp feature.

### Summary
During the timestamp signature generation, the revocation status of the certificate(s) used to generate the timestamp signature was not verified.

### Details
During timestamp signature generation, notation-go did not check the revocation status of the certificate chain used by the TSA. This oversight creates a vulnerability that could be exploited through a Man-in-The-Middle attack. An attacker could potentially use a compromised, intermediate, or revoked leaf certificate to generate a malicious countersignature, which would then be accepted and stored by `notation`.

### Impact
This could lead to denial of service scenarios, particularly in CI/CD environments during signature verification processes because timestamp signature would fail due to the presence of a revoked certificate(s) potentially disrupting operations.


## Affected packages

- `github.com/notaryproject/notation-go >= 1.2.0-beta.1, < 1.3.0-rc.2`

## Remediation

Upgrade to a patched release:

- `github.com/notaryproject/notation-go 1.3.0-rc.2`