CVEvulnerability

CVE-2026-25478

6.5 MEDIUM Published 2026-02-09 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-02-09
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.4 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weaknesses
CWE-942

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.

Affected configurations

• litestar litestar (< 2.20.0)

Related

Weakness · CWE (1)

  • CWE-942 Permissive Cross-domain Security Policy with Untrusted Domains weakness

References