Vulnerability · Published Sep 7, 2026 · Assigned by VulnCheck
CVE-2026-86539knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint
High 7.2
In plain English
A high-severity server-side request forgery in knowns from knowns-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.4%top 70.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
knowns through 0.33.0 contains a server-side request forgery vulnerability in the POST /api/embedding-models/test endpoint that issues outbound requests to caller-supplied destinations without validation. Attackers can enumerate internal hosts and cloud metadata endpoints by observing transport error messages that reveal network reachability information.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| knowns-dev | knowns | 0 – through 0.33.0 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-qx9v-m9gg-p5jg) vendor-advisory
- Embedding-model test issues request to caller-supplied apiBase and returns the transport error (v0.33.0, unfixed) technical-description
- gitLsRemoteHead runs git ls-remote against a caller-supplied URL (v0.33.0, unfixed) technical-description
- VulnCheck Advisory: knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint third-party-advisory