CVE-2026-76245: Eidetic-Labs Stigmem

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Eidetic-Labs Stigmem: before 0.9.0a2 (fixed in 0.9.0a2)

Published 2026-08-19. Last modified 2026-09-11.