CVE-2026-70482Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.
Updated under an hour ago ()
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It affects openwebui open_webui. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
openwebui open_webui openwebui:open_webui | from 0.8.0 before 0.11.0 | NVD |
References
- https://github.com/open-webui/open-webui/commit/b190dcf3caa00dc8b7b9c7312828298d9143f60dpatch
- https://github.com/open-webui/open-webui/commit/c4332be71e6e9c314e8a13b9d2819a6932561630patch
- https://github.com/open-webui/open-webui/releases/tag/v0.11.0release-notes
- https://github.com/open-webui/open-webui/security/advisories/GHSA-rq84-p6rr-vf89exploit, mitigation, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.