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NVD Vulnerability Details :
CVE-2026-25478
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-09 Feb, 2026 | 20:15
Updated At-17 Feb, 2026 | 15:15

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.4HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Primary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 7.4
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Type: Primary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CPE Matches
litestar
litestar
>>litestar>>Versions before 2.20.0(exclusive)
cpe:2.3:a:litestar:litestar:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-942Primarysecurity-advisories@github.com
CWE ID: CWE-942
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0security-advisories@github.com
Release Notes
https://github.com/litestar-org/litestar/commit/eb87703b309efcc0d1b087dcb12784e76b003d5asecurity-advisories@github.com
Patch
https://github.com/litestar-org/litestar/releases/tag/v2.20.0security-advisories@github.com
Release Notes
https://github.com/litestar-org/litestar/security/advisories/GHSA-2p2x-hpg8-cqp2security-advisories@github.com
Exploit
Vendor Advisory
Hyperlink: https://docs.litestar.dev/2/release-notes/changelog.html#2.20.0
Source: security-advisories@github.com
Resource:
Release Notes
Hyperlink: https://github.com/litestar-org/litestar/commit/eb87703b309efcc0d1b087dcb12784e76b003d5a
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/litestar-org/litestar/releases/tag/v2.20.0
Source: security-advisories@github.com
Resource:
Release Notes
Hyperlink: https://github.com/litestar-org/litestar/security/advisories/GHSA-2p2x-hpg8-cqp2
Source: security-advisories@github.com
Resource:
Exploit
Vendor Advisory
Change History
0Changes found
Details not found