OpenSIPS CVE-2026-25554

OpenSIPS versions 3.1 before 3.6.4 containing the auth_jwt module (prior to commit 3822d33) contain a SQL injection vulnerability in the jwt_db_authorize() function in modules/auth_jwt/authorize.c when db_mode is enabled and a SQL database backend is used. The function extracts the tag claim from a JWT without prior signature verification and incorporates the unescaped value directly into a SQL query. An attacker can supply a crafted JWT with a malicious tag claim to manipulate the query result and bypass JWT authentication, allowing impersonation of arbitrary identities.

OpenSIPS versions 3.1 up to but not including 3.6.4 are affected, specifically installations that load the auth_jwt module with db_mode enabled and a SQL database backend (commit 3822d33 and earlier). Deployments that do not use auth_jwt, or that use it without the database authorization path, are not exposed. No CPE string was provided in the input. Vendor resources are the project site https://opensips.org/ and the fixed-release changelog https://opensips.org/pub/opensips/3.6.4/ChangeLog, with the vulnerability advisory at https://www.vulncheck.com/advisories/opensips-auth-jwt-sql-injection-enables-jwt-authentication-bypass.