CVE-2026-33996 affects LibJWT versions 3.0.0 through 3.2.x, where a lack of NULL value protection during JWK parsing for RSA-PSS allows a specially crafted JWK file to use integers instead of expected strings, a flaw fixed in version 3.3.0. Rated Medium with a CVSS score of 5.5 (AV:L/UI:R/A:H), exploitation requires local access and user interaction, potentially leading to a high impact on availability, such as application crashes or denial of service. Currently, there is no evidence of active exploitation, no public exploit code available, and minimal community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 3.0.0, < 3.3.0CPE matchmatch criteria | cpe:2.3:a:libjwt:libjwt:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:A/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.