CVE-2026-33996

Published: Mar 28, 2026 Last Modified: Mar 28, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,8
Source: [email protected]
Attack Vector: adjacent
Attack Complexity: high
Privileges Required: none
User Interaction: active
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0002
Percentile
0,1th
Updated

EPSS Score Trend (Last 2 Days)

476

NULL Pointer Dereference

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Integrity Confidentiality
Potential Impacts:
Dos: Crash, Exit, Or Restart Execute Unauthorized Code Or Commands Read Memory Modify Memory
Applicable Platforms
Languages: C, C#, C++, Go, Java
Likelihood of Exploit: Medium
View CWE Details
https://github.com/benmcollins/libjwt/commit/cfd890286fa49a…
https://github.com/benmcollins/libjwt/commit/cfd890286fa49ae61b534c937c9f0428b5…
https://github.com/benmcollins/libjwt/security/advisories/G…
https://github.com/benmcollins/libjwt/security/advisories/GHSA-ph96-hqpc-9f66