python-jwcrypto security update
Implements JWK, JWS, JWE specifications with python-cryptography Security Fix(es): A flaw was found in jwcrypto. The JWK.import_key() function validates the key_ops JWK member for duplicate values using an algorithm with O(n^2) time complexity, and the length of key_ops is not bounded. A remote, unauthenticated attacker can supply a JWK with a large key_ops array to an application that passes attacker-controlled key material to a public key-import API (reachable via ECDH-ES key agreement, OIDC dynamic client registration, DPoP, or ACME account key registration, among others) to consume excessive CPU time, resulting in a denial of service.(CVE-2026-92091)
OESA-2026-4066
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:OESA-2026-4066
python-jwcrypto
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.4.2-5.oe2203sp4
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
python-jwcrypto
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.5.0-5.oe2403sp1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
python-jwcrypto
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.5.0-5.oe2403sp3
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
python-jwcrypto
Source reference: /affected/3/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.5.0-5.oe2403sp4
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
python-jwcrypto
Source reference: /affected/4/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 0.5.0-6.oe2003sp4
Source reference:
/affected/4/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": "1.4.2-5.oe2203sp4"
}
]
}
],
"package": {
"name": "python-jwcrypto",
"purl": "pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-22.03-LTS-SP4",
"ecosystem": "openEuler:22.03-LTS-SP4"
},
"database_specific": {
"source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
},
"ecosystem_specific": {
"src": [
"python-jwcrypto-1.4.2-5.oe2203sp4.src.rpm"
],
"noarch": [
"python3-jwcrypto-1.4.2-5.oe2203sp4.noarch.rpm"
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.0-5.oe2403sp1"
}
]
}
],
"package": {
"name": "python-jwcrypto",
"purl": "pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-24.03-LTS-SP1",
"ecosystem": "openEuler:24.03-LTS-SP1"
},
"database_specific": {
"source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
},
"ecosystem_specific": {
"src": [
"python-jwcrypto-1.5.0-5.oe2403sp1.src.rpm"
],
"noarch": [
"python-jwcrypto-help-1.5.0-5.oe2403sp1.noarch.rpm",
"python3-jwcrypto-1.5.0-5.oe2403sp1.noarch.rpm"
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.0-5.oe2403sp3"
}
]
}
],
"package": {
"name": "python-jwcrypto",
"purl": "pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-24.03-LTS-SP3",
"ecosystem": "openEuler:24.03-LTS-SP3"
},
"database_specific": {
"source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
},
"ecosystem_specific": {
"src": [
"python-jwcrypto-1.5.0-5.oe2403sp3.src.rpm"
],
"noarch": [
"python-jwcrypto-help-1.5.0-5.oe2403sp3.noarch.rpm",
"python3-jwcrypto-1.5.0-5.oe2403sp3.noarch.rpm"
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.0-5.oe2403sp4"
}
]
}
],
"package": {
"name": "python-jwcrypto",
"purl": "pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-24.03-LTS-SP4",
"ecosystem": "openEuler:24.03-LTS-SP4"
},
"database_specific": {
"source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
},
"ecosystem_specific": {
"src": [
"python-jwcrypto-1.5.0-5.oe2403sp4.src.rpm"
],
"noarch": [
"python-jwcrypto-help-1.5.0-5.oe2403sp4.noarch.rpm",
"python3-jwcrypto-1.5.0-5.oe2403sp4.noarch.rpm"
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.0-6.oe2003sp4"
}
]
}
],
"package": {
"name": "python-jwcrypto",
"purl": "pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-20.03-LTS-SP4",
"ecosystem": "openEuler:20.03-LTS-SP4"
},
"database_specific": {
"source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
},
"ecosystem_specific": {
"src": [
"python-jwcrypto-0.5.0-6.oe2003sp4.src.rpm"
],
"noarch": [
"python3-jwcrypto-0.5.0-6.oe2003sp4.noarch.rpm"
]
}
}
]Publisher severity
medium
Source reference: /database_specific/severity
- Event
- #14731 · Revision 1
- Added to Heist Feed
- Publisher date