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 exploit this behavior by using integers in places where the code expected a string. This was fixed in v3.3.0. A workaround is available. Users importing keys through a JWK file should not do so from untrusted sources. Use the `jwk2key` tool to check for validity of a JWK file. Likewise, if possible, do not use JWK files with RSA-PSS keys.

CVSS

No CVSS.

References

Link	Resource
https://github.com/benmcollins/libjwt/commit/cfd890286fa49ae61b534c937c9f0428b5c6034c
https://github.com/benmcollins/libjwt/security/advisories/GHSA-ph96-hqpc-9f66

Configurations

No configuration.

History

No history.

Information

Published : 2026-03-27 23:17

Updated : 2026-03-30 13:26

NVD link : CVE-2026-33996

Mitre link : CVE-2026-33996

CVE.ORG link : CVE-2026-33996

JSON object : View

Products Affected

No product.

CWE

CWE-476

NULL Pointer Dereference

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