Answer in brief
CVE-2026-76242 records a Critical severity (CVSS 9.1) vulnerability in stigmem Federation Peer Registration Authentication Bypass. The current sources do not mark it as known exploited. The current feed maps eidetic-labs/stigmem (generic), stigmem-node (pypi). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps eidetic-labs/stigmem (generic), stigmem-node (pypi). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| eidetic-labs/stigmemgeneric | >=0 <0.9.0a2 | 0.9.0a2 |
| stigmem-nodepypi | >=0 <0.9.0a2 | 0.9.0a2 |
Published upstream
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
stigmem-node 0.9.0a1 accepts federation peer key material during peer registration without a separate administrator out-of-band fingerprint approval step. On nodes that accept federation peer registration over a network where initial registration can be intercepted or misdirected, an attacker can register a malicious peer and gain access to or tamper with federation traffic. Fixed in 0.9.0a2, which introduces a pending approval flow requiring administrator fingerprint verification before peer tokens are accepted.
Quoted source text, attributed separately from HOL analysis.