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Security Database

CVE

CWE

Training

CVE-2026-25478

Published: Feb 9, 2026

Modified: Feb 10, 2026

PUBLISHED

CVSS v3.1

7.4

HIGH

Description

Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, CORSConfig.allowed_origins_regex is constructed using a regex built from configured allowlist values and used with fullmatch() for validation. Because metacharacters are not escaped, a malicious origin can match unexpectedly. The check relies on allowed_origins_regex.fullmatch(origin). This vulnerability is fixed in 2.20.0.

Vendor	Product	Versions
litestar-org	litestar	affected `< 2.20.0`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

References

https://github.com/litestar-org/litestar/security/advisories/GHSA-2p2x-hpg8-cqp2

x_refsource_CONFIRM

https://github.com/litestar-org/litestar/commit/eb87703b309efcc0d1b087dcb12784e76b003d5a

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

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