CVEvulnerability
CVE-2026-25479
6.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-02-09
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weaknesses
- CWE-185
Description
Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, in litestar.middleware.allowed_hosts, allowlist entries are compiled into regex patterns in a way that allows regex metacharacters to retain special meaning (e.g., . matches any character). This enables a bypass where an attacker supplies a host that matches the regex but is not the intended literal hostname. This vulnerability is fixed in 2.20.0.
Affected configurations
• litestar litestar (< 2.20.0)
Related
Weakness · CWE (1)
- CWE-185 Incorrect Regular Expression weakness
References
- https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0 Release Notes
- https://github.com/litestar-org/litestar/commit/06b36f481d1bfea6f19995cfb4f203aba45c4ace Patch
- https://github.com/litestar-org/litestar/releases/tag/v2.20.0 Release Notes
- https://github.com/litestar-org/litestar/security/advisories/GHSA-93ph-p7v4-hwh4 Exploit, Vendor Advisory