HIGH

CVE-2026-70482

Openwebui Open Webui 2026-08-04 CVSS v3.1

CVSS

8.8

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.0, when ENABLE_OAUTH_TOKEN_EXCHANGE=True, /oauth/{provider}/token/exchange accepts a raw provider access token and validates it by calling the provider userinfo endpoint without confirming which OAuth client the token was issued to. Anyone holding an access token minted for any client registered with the same provider could exchange it for an Open WebUI session as that token user, including applications the operator does not control and has never authorized. This issue is fixed in 0.11.0.

Weakness (CWE)

CWE-287 Improper Authentication

EPSS Score

0.46%

Probability of exploitation in next 30 days

39.2th percentile

References

https://github.com/open-webui/open-webui/commit/b190dcf3caa00dc8b7b9c7312828298d9143f60d Patch https://github.com/open-webui/open-webui/commit/c4332be71e6e9c314e8a13b9d2819a6932561630 Patch https://github.com/open-webui/open-webui/releases/tag/v0.11.0 Release Notes https://github.com/open-webui/open-webui/security/advisories/GHSA-rq84-p6rr-vf89 Exploit, Mitigation, Vendor Advisory

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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