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Suggestion detail

Untriaged
Permalink CVE-2026-25478
7.4 HIGH
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): NONE
  • User interaction (UI): REQUIRED
  • Scope (S): CHANGED
  • Confidentiality impact (C): HIGH
  • Integrity impact (I): NONE
  • Availability impact (A): NONE
created 2 months, 1 week ago Activity log
  • Created suggestion 2 months, 1 week ago
Litestar has a CORS origin allowlist bypass due to unescaped regex metacharacters in allowed origins

Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, CORSConfig.allowed_origins_regex is constructed using a regex built from configured allowlist values and used with fullmatch() for validation. Because metacharacters are not escaped, a malicious origin can match unexpectedly. The check relies on allowed_origins_regex.fullmatch(origin). This vulnerability is fixed in 2.20.0.

Affected products

litestar
  • ==< 2.20.0

Matching in nixpkgs

pkgs.litestar

Production-ready, Light, Flexible and Extensible ASGI API framework

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