What is CVE-2026-33996?

CVE-2026-33996 is a medium-severity vulnerability in Benmcollins Libjwt, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-03-27.

How severe is CVE-2026-33996?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Benmcollins Libjwt

CVE-2026-33996

LibJWT is a C JSON Web Token Library. Starting in version 3.0.0 and prior to version 3.3.0, the JWK parsing for RSA-PSS did not protect against a NULL value when expecting to parse JSON string values. A specially crafted JWK file could exp…

EPSS: 0.002 (4.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Benmcollins Libjwt — versions >= 3.0.0, < 3.3.0
Libjwt

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33996?: CVE-2026-33996 is a medium-severity vulnerability in Benmcollins Libjwt, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-03-27.
How severe is CVE-2026-33996?: Medium severity. CVSS v3 base score is 5.5 out of 10.