User Impersonation Affecting github.com/supabase/auth/internal/api package, versions <2.185.0
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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- published16 Mar 2026
- disclosed11 Mar 2026
- creditUnknown
Introduced: 11 Mar 2026
CVE-2026-31813 Â (opens in a new tab)How to fix?
Upgrade github.com/supabase/auth/internal/api to version 2.185.0 or higher.
Overview
Affected versions of this package are vulnerable to User Impersonation via the IdTokenGrantParams.getProvider issuer validation logic in the Apple and Azure provider handlers. An attacker can obtain valid sessions for arbitrary users by submitting crafted ID tokens that bypass issuer validation.