CVE-2026-70482High· 8.1▾ TwilightOpen 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 b…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
0.3% → 0.5%
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.
open_webui >= 0.8.0, < 0.11.0Upgrade past the affected range:
open_webui 0.11.0Affected packages:
open-webui >= 0.8.0, < 0.11.0Patched in:
open-webui 0.11.0Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-70492High· 8.7Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform
CVE-2026-70493Medium· 6.5Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform
CVE-2026-70494High· 8.1Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform
CVE-2026-70481Medium· 5.4Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform