Security Advisory

CVE-2026-25478

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-02-09 18:46:56

Last updated 2026-02-10 16:01:16

Assigner GitHub_M

State PUBLISHED

Description

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.

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