CVEvulnerability
CVE-2026-25480
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-176
Description
Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, FileStore maps cache keys to filenames using Unicode NFKD normalization and ord() substitution without separators, creating key collisions. When FileStore is used as response-cache backend, an unauthenticated remote attacker can trigger cache key collisions via crafted paths, causing one URL to serve cached responses of another (cache poisoning/mixup). This vulnerability is fixed in 2.20.0.
Affected configurations
• litestar litestar (< 2.20.0)
Related
Weakness · CWE (1)
- CWE-176 Improper Handling of Unicode Encoding weakness
References
- https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0 Release Notes
- https://github.com/litestar-org/litestar/commit/85db6183a76f8a6b3fd6ee3c88d860b9f37a2cca Patch
- https://github.com/litestar-org/litestar/releases/tag/v2.20.0 Release Notes
- https://github.com/litestar-org/litestar/security/advisories/GHSA-vxqx-rh46-q2pg Exploit, Vendor Advisory