CVE-2026-57997 — MEDIUM (4.8)

Q: How severe is CVE-2026-57997?

CVE-2026-57997 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-57997?

Check the references section above for vendor advisories and patch information. Affected products include: Strapi Strapi.

Vulnerability 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.

CVSS Score

4.8

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Strapi	Strapi	< 5.7.0

Related Weaknesses (CWE)

CWE-327

References

https://github.com/strapi/strapiProduct
https://github.com/strapi/strapi/issues/26587Issue Tracking
https://github.com/strapi/strapi/pull/26752Issue TrackingPatch
https://www.vulncheck.com/advisories/strapi-users-permissions-jwt-algorithm-confPatchThird Party Advisory

FAQ

What is CVE-2026-57997?

CVE-2026-57997 is a vulnerability with a CVSS score of 4.8 (MEDIUM). 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 HS25...

How severe is CVE-2026-57997?

CVE-2026-57997 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-57997?

Check the references section above for vendor advisories and patch information. Affected products include: Strapi Strapi.