PYSEC-2026-2197
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/litestar/PYSEC-2026-2197.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-2197
- Aliases
- Published
- 2026-02-09T20:15:57.330Z
- Modified
- 2026-07-13T07:15:34.276090244Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
PyPI / litestar
Package
- Name
- litestar
- View open source insights on deps.dev
- Purl
- pkg:pypi/litestar
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.20.0
Affected versions
1.*
1.0.0a0
2.*
2.0.0a3
2.0.0a4
2.0.0a5
2.0.0a6
2.0.0a7
2.0.0b1
2.0.0b2
2.0.0b3
2.0.0b4
2.0.0rc1
2.0.0
2.0.1
2.1.0
2.1.1
2.2.0
2.2.1
2.3.0
2.3.1
2.3.2
2.4.0
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.5.0
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.6.0
2.6.1
2.6.2
2.6.3
2.6.4
2.7.0
2.7.1
2.7.2
2.8.0
2.8.1
2.8.2
2.8.3
2.9.0
2.9.1
2.10.0
2.11.0
2.12.0
2.12.1
2.13.0
2.14.0
2.15.0
2.15.1
2.15.2
2.16.0
2.17.0
2.18.0
2.19.0