DEBIAN-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.
DEBIAN-CVE-2026-33996
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-33996
libjwt3
Source reference: /affected/0/package/name
- Affected versions
- 3.2.2-1
Source reference:
/affected/0/versions3.2.3-1Source reference:
/affected/0/versions - Fixed versions
- 3.3.2-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.2-1"
}
]
}
],
"package": {
"name": "libjwt3",
"purl": "pkg:deb/debian/libjwt3?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.2.2-1",
"3.2.3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33996.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57581 · Revision 1
- Added to Heist Feed
- Publisher date