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CVE Vulnerability Details :
CVE-2026-25480
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-09 Feb, 2026 | 18:49
Updated At-10 Feb, 2026 | 16:01
Rejected At-
▼CVE Numbering Authority (CNA)
FileStore key canonicalization collisions allow response cache mixup/poisoning (ASCII ord + Unicode NFKD)

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 Products
Vendor
litestar-org
Product
litestar
Versions
Affected
  • < 2.20.0
Problem Types
TypeCWE IDDescription
CWECWE-176CWE-176: Improper Handling of Unicode Encoding
Type: CWE
CWE ID: CWE-176
Description: CWE-176: Improper Handling of Unicode Encoding
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/litestar-org/litestar/security/advisories/GHSA-vxqx-rh46-q2pg
x_refsource_CONFIRM
https://github.com/litestar-org/litestar/commit/85db6183a76f8a6b3fd6ee3c88d860b9f37a2cca
x_refsource_MISC
https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0
x_refsource_MISC
https://github.com/litestar-org/litestar/releases/tag/v2.20.0
x_refsource_MISC
Hyperlink: https://github.com/litestar-org/litestar/security/advisories/GHSA-vxqx-rh46-q2pg
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/litestar-org/litestar/commit/85db6183a76f8a6b3fd6ee3c88d860b9f37a2cca
Resource:
x_refsource_MISC
Hyperlink: https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0
Resource:
x_refsource_MISC
Hyperlink: https://github.com/litestar-org/litestar/releases/tag/v2.20.0
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found