Vulnerability · Published May 15, 2026 · Assigned by GitHub_M

CVE-2026-45667Open WebUI: Unauthenticated endpoint can trigger embedding generation (cost/DoS)

Medium 6.5

In plain English

A medium-severity missing authorization in open-webui from open-webui. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 72.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, GET /api/v1/memories/ef is accessible without authentication and executes request.app.state.EMBEDDING_FUNCTION(...). This allows any unauthenticated caller to trigger embedding generation which can lead to direct cost exposure if a paid provider is used. This vulnerability is fixed in 0.8.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	open-webui	0.8.0	GHSA-m69w-p7m4-585j
PyPI	open-webui	0.8.0	PYSEC-2026-2747

Affected products (as reported)

Vendor	Product	Versions
open-webui	open-webui	< 0.8.0

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-m69w-p7m4-585j x_refsource_CONFIRM