CVE-2026-57997 – Strapi users-permissions – JWT Algorithm Confusion via Missing Algorithm Configuration

CVE ID :CVE-2026-57997

Published : June 29, 2026, 9:16 p.m. | 29 minutes ago

Description :Strapi users-permissions plugin fails to restrict JWT algorithms when plugin::users-permissions.jwt.algorithm is not explicitly configured, allowing acceptance of HS384 and HS512 tokens alongside HS256. Attackers possessing the jwtSecret can mint tokens with non-standard HMAC variants to bypass algorithm restrictions and weaken authentication controls.

Severity: 6.3 | MEDIUM

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