Vulnerability DatabaseCVE-2026-57997
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CVE-2026-57997
Published:June 29, 2026
Updated:July 21, 2026
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.
Related Resources (4)
https://www.vulncheck.com/advisories/strapi-users-permissions-jwt-algorithm-confusion-via-missing-algorithm-configuration
https://github.com/strapi/strapi/pull/26752
https://github.com/strapi/strapi
https://github.com/strapi/strapi/issues/26587
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Use of a Broken or Risky Cryptographic Algorithm
CWE-327
EPSS
Base Score:
0.15