Improper Authentication Affecting open-webui package, versions [0.8.0,0.11.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published9 Aug 2026
- disclosed4 Aug 2026
- creditUnknown
Introduced: 4 Aug 2026
NewCVE-2026-70482 (opens in a new tab)How to fix?
Upgrade open-webui to version 0.11.0 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Improper Authentication via the token_exchange process. An attacker can gain unauthorized access to another user's account by exchanging an OAuth access token issued to any client registered with the same provider, provided the subject identifier matches the victim's account. This is only exploitable if ENABLE_OAUTH_TOKEN_EXCHANGE=True is set, the victim already has an account, and the attacker can obtain a valid provider access token for the victim.