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CVE-2026-25480

MEDIUM

6.5

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/9/2026

Last Modified2/17/2026

Sourcenvd

Honeypot Sightings0

Affected Products

litestar:litestar

Weaknesses (CWE)

CWE-176

References

https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0(security-advisories@github.com)

https://github.com/litestar-org/litestar/commit/85db6183a76f8a6b3fd6ee3c88d860b9f37a2cca(security-advisories@github.com)

https://github.com/litestar-org/litestar/releases/tag/v2.20.0(security-advisories@github.com)

https://github.com/litestar-org/litestar/security/advisories/GHSA-vxqx-rh46-q2pg(security-advisories@github.com)

IOC Correlations

No correlations recorded

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