CVE-2026-25478 (GCVE-0-2026-25478)

Vulnerability from cvelistv5 – Published: 2026-02-09 18:46 – Updated: 2026-02-10 16:01
VLAI
Title
Litestar has a CORS origin allowlist bypass due to unescaped regex metacharacters in allowed origins
Summary
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.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-10 15:30 UTC
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7909 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
litestar-org litestar Affected: < 2.20.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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