CVE-2026-57997

mediumCVSS 4.8covered by 1 sourcefirst seen 2026-06-29

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.

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Exploitation outlook

Low exploitation risk0.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-57997: Strapi users-permissions plugin fails to restrict JWT algorithms when plugin::users-permission…nvd · 2026-06-29

External references

NVD record for CVE-2026-57997

CVE.org record

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