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CVE-2026-76245

stigmem Federation Peer Token Timestamp Validation Bypass

HIGH
7.1
CVSS Score
Published: August 19, 2026 at 02:02 PM UTC
Updated: September 11, 2026 at 06:40 PM UTC
1 product affected across 1 vendorStigmem

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Severity
HIGH7.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Stigmem· Eidetic
60%
v < 0.9.0a2
Vendor states this is fixed in 0.9.0a2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: cverecord
https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-xh5j-xjfq-qvvx
Third Party Advisory
Source: cverecord
https://www.vulncheck.com/advisories/stigmem-federation-peer-token-timestamp-validation-bypass

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-345

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