---
id: CVE-2026-76245
title: >-
  stigmem (pip package stigmem-node) version 0.9.0a1 contains a
  timestamp-handling mismatch in federation peer-token validation that can cause
  valid peer tokens to be incorrectly treated as expired
summary: >-
  stigmem (pip package stigmem-node) version 0.9.0a1 contains a
  timestamp-handling mismatch in federation peer-token validation that can cause
  valid peer tokens to be incorrectly treated as expired. This affects the
  availability and reliab…
severity: high
cwe:
  - CWE-345
vendor: stigmem-node
product: stigmem-node
affected:
  - stigmem-node < 0.9.0a2
patched:
  - stigmem-node 0.9.0a2
published: '2026-08-19'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T18:28:15.520'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76245'
references:
  - url: >-
      https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-xh5j-xjfq-qvvx
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/stigmem-federation-peer-token-timestamp-validation-bypass
    label: disclosure@vulncheck.com
  - url: 'https://github.com/eidetic-labs/stigmem'
  - url: 'https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35'
  - url: 'https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md'
  - url: 'https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2'
tags:
  - nvd
  - osv
  - pip
epss: 0.00183
epssPercentile: 0.08161
aliases:
  - GHSA-xh5j-xjfq-qvvx
ecosystem: pip
ingestedAt: '2026-08-20T19:23:07.068Z'
---

## Overview

stigmem (pip package stigmem-node) version 0.9.0a1 contains a timestamp-handling mismatch in federation peer-token validation that can cause valid peer tokens to be incorrectly treated as expired. This affects the availability and reliability of authenticated federation flows on nodes using federation peer authentication paths. The issue is fixed in 0.9.0a2, which uses the canonical millisecond-based validation path.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-76245)

Affected packages:

- `stigmem-node < 0.9.0a2`

Patched in:

- `stigmem-node 0.9.0a2`

Source: https://osv.dev/vulnerability/GHSA-xh5j-xjfq-qvvx