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.

INFO

Published Date :

2026-02-09T18:46:56.445Z

Last Modified :

2026-02-10T16:01:16.807Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-25478 vulnerability.

Vendors Products
Litestar
  • Litestar
Litestar-org
  • Litestar
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-25478.

URL Resource
https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0 cve-icon cve-icon
https://github.com/litestar-org/litestar/commit/eb87703b309efcc0d1b087dcb12784e76b003d5a cve-icon cve-icon
https://github.com/litestar-org/litestar/releases/tag/v2.20.0 cve-icon cve-icon
https://github.com/litestar-org/litestar/security/advisories/GHSA-2p2x-hpg8-cqp2 cve-icon cve-icon
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