CVE-2026-37236

9.8 Critique

Publiée le 28/08/2026 à 18:17 · Modifiée le 08/09/2026 à 21:42 · Analyse NVD reportée · Source : cve@mitre.org

Description

grpc-gateway v2.28.0 is vulnerable to Incorrect Access Control. The application processes the X-HTTP-Method-Override header in ServeMux.ServeHTTP without restricting allowed methods. When a POST request with Content-Type application/x-www-form-urlencoded includes this header, the request method is rewritten to an arbitrary attacker-supplied value before routing. This allows bypassing method-based access controls enforced by upstream proxies or WAFs.

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Scores CVSS

Version	Score	Source	Vecteur
3.1	9.8 Critique	134c704f-9b21-4f2e-91b3-4a467353bcc0	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Faiblesses (CWE)

CWE-639

Références

https://github.com/grpc-ecosystem/grpc-gateway
https://github.com/grpc-ecosystem/grpc-gateway/commit/72123cd4f32545f6e1376873f412dcdcbcf29acc
https://s00me00ne.com/cve/cve-2026-37236/

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories