CVE-2026-25478

HIGH SEVERITY

CVSS Score & Metrics

Base Score

7.4 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

February 09, 2026

Last Modified

February 10, 2026

CWE ID

CWE-942

Source

GitHub

Vendor

pip

Product

litestar

External References

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

CVE-2026-25478

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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