DEBIAN-CVE-2026-48526
PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.
DEBIAN-CVE-2026-48526
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-2026-48526
pyjwt
Source reference: /affected/0/package/name
- Affected versions
- 2.10.1-1
Source reference:
/affected/0/versions2.10.1-2Source reference:
/affected/0/versions2.10.1-3Source reference:
/affected/0/versions2.10.1-4Source reference:
/affected/0/versions2.11.0-2Source reference:
/affected/0/versions2.12.1-1Source reference:
/affected/0/versions2.13.0-1Source reference:
/affected/0/versions2.14.0-1Source reference:
/affected/0/versions2.15.0-1Source reference:
/affected/0/versions2.15.1-1Source reference:
/affected/0/versions2.6.0-1Source reference:
/affected/0/versions2.6.0-1+deb12u1Source reference:
/affected/0/versions2.7.0-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
pyjwt
Source reference: /affected/1/package/name
- Affected versions
- 2.10.1-2
Source reference:
/affected/1/versions2.10.1-2+deb13u1Source reference:
/affected/1/versions2.10.1-3Source reference:
/affected/1/versions2.10.1-4Source reference:
/affected/1/versions2.11.0-2Source reference:
/affected/1/versions2.12.1-1Source reference:
/affected/1/versions2.13.0-1Source reference:
/affected/1/versions2.14.0-1Source reference:
/affected/1/versions2.15.0-1Source reference:
/affected/1/versions2.15.1-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
pyjwt
Source reference: /affected/2/package/name
- Affected versions
- 2.10.1-2
Source reference:
/affected/2/versions2.10.1-3Source reference:
/affected/2/versions2.10.1-4Source reference:
/affected/2/versions2.11.0-2Source reference:
/affected/2/versions2.12.1-1Source reference:
/affected/2/versions - Fixed versions
- 2.13.0-1
Source reference:
/affected/2/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"
}
]
}
],
"package": {
"name": "pyjwt",
"purl": "pkg:deb/debian/pyjwt?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.10.1-1",
"2.10.1-2",
"2.10.1-3",
"2.10.1-4",
"2.11.0-2",
"2.12.1-1",
"2.13.0-1",
"2.14.0-1",
"2.15.0-1",
"2.15.1-1",
"2.6.0-1",
"2.6.0-1+deb12u1",
"2.7.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48526.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pyjwt",
"purl": "pkg:deb/debian/pyjwt?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.10.1-2",
"2.10.1-2+deb13u1",
"2.10.1-3",
"2.10.1-4",
"2.11.0-2",
"2.12.1-1",
"2.13.0-1",
"2.14.0-1",
"2.15.0-1",
"2.15.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48526.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.13.0-1"
}
]
}
],
"package": {
"name": "pyjwt",
"purl": "pkg:deb/debian/pyjwt?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.10.1-2",
"2.10.1-3",
"2.10.1-4",
"2.11.0-2",
"2.12.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48526.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57177 · Revision 1
- Added to Heist Feed
- Publisher date