Answer in brief
CVE-2026-76239 records a Medium severity (CVSS 6.3) vulnerability in Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_address. The current sources do not mark it as known exploited. The current feed maps eidetic-labs/stigmem (generic), eidetic-labs/stigmem-node (generic), stigmem-node (pip), 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 6.3. 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), eidetic-labs/stigmem-node (generic), stigmem-node (pip), stigmem-node (pypi). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| eidetic-labs/stigmemgeneric | >=0 <0.9.0a11 | 0.9.0a11 |
| eidetic-labs/stigmem-nodegeneric | >=0 <0.9.0a11 | 0.9.0a11 |
| stigmem-nodepip | <0.9.0a11 | 0.9.0a11 |
| stigmem-nodepypi | >=0 <0.9.0a11 | 0.9.0a11 |
Published upstream
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 19, 2026
Stigmem before 0.9.0a11 fails to validate the delivery_address parameter when creating webhook subscriptions, allowing authenticated users to specify internal loopback and private network destinations. Attackers can trigger matching fact-change events to cause the Stigmem server to issue server-side HTTP POST requests to internal services, enabling blind SSRF attacks against localhost and private network endpoints.
Quoted source text, attributed separately from HOL analysis.