CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NCVE-2026-25480
Medium (6.5) in litestar litestar. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in litestar 2.20.0.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 40% of CVEs (scores of 2026-10-31)
- CWE
- CWE-176
- Published
- Modified
- Record from
- the NVD, synced
Affected
- litestar:litestar
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-vxqx-rh46-q2pg | PyPI | litestar | >=2.19.0 <2.20.0 | 2.20.0 |
| PYSEC-2026-2197 | PyPI | litestar | <2.20.0 | 2.20.0 |