OESA-2026-4066

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4066
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-4066
Upstream
  • CVE-2026-92091
Published
2026-09-25T01:28:00Z
Modified
2026-09-25T01:45:11Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
python-jwcrypto security update
Details

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)

Database specific 
{
    "severity":  "Medium"
}
References

Affected packages

openEuler:20.03-LTS-SP4
python-jwcrypto

Package

Name
python-jwcrypto
Purl
pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.5.0-6.oe2003sp4

Ecosystem specific 

{
    "noarch":  [
        "python3-jwcrypto-0.5.0-6.oe2003sp4.noarch.rpm"
    ],
    "src":  [
        "python-jwcrypto-0.5.0-6.oe2003sp4.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
openEuler:22.03-LTS-SP4
python-jwcrypto

Package

Name
python-jwcrypto
Purl
pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.4.2-5.oe2203sp4

Ecosystem specific 

{
    "noarch":  [
        "python3-jwcrypto-1.4.2-5.oe2203sp4.noarch.rpm"
    ],
    "src":  [
        "python-jwcrypto-1.4.2-5.oe2203sp4.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
openEuler:24.03-LTS-SP1
python-jwcrypto

Package

Name
python-jwcrypto
Purl
pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.5.0-5.oe2403sp1

Ecosystem specific 

{
    "noarch":  [
        "python-jwcrypto-help-1.5.0-5.oe2403sp1.noarch.rpm",
        "python3-jwcrypto-1.5.0-5.oe2403sp1.noarch.rpm"
    ],
    "src":  [
        "python-jwcrypto-1.5.0-5.oe2403sp1.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
openEuler:24.03-LTS-SP3
python-jwcrypto

Package

Name
python-jwcrypto
Purl
pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.5.0-5.oe2403sp3

Ecosystem specific 

{
    "noarch":  [
        "python-jwcrypto-help-1.5.0-5.oe2403sp3.noarch.rpm",
        "python3-jwcrypto-1.5.0-5.oe2403sp3.noarch.rpm"
    ],
    "src":  [
        "python-jwcrypto-1.5.0-5.oe2403sp3.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"
openEuler:24.03-LTS-SP4
python-jwcrypto

Package

Name
python-jwcrypto
Purl
pkg:rpm/openEuler/python-jwcrypto&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.5.0-5.oe2403sp4

Ecosystem specific 

{
    "noarch":  [
        "python-jwcrypto-help-1.5.0-5.oe2403sp4.noarch.rpm",
        "python3-jwcrypto-1.5.0-5.oe2403sp4.noarch.rpm"
    ],
    "src":  [
        "python-jwcrypto-1.5.0-5.oe2403sp4.src.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4066.json"