Jwcrypto: jwcrypto: denial of service via o(n^2) duplicate check on unbounded jwk key_ops array
Priority MEDIUM 60CWE-407Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-407.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00569 47th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Ansible Automation Platform 2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 16.2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 16.2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 16.2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 16.2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 16.2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 16.2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 16.2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 16.2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 17.1 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 17.1 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 17.1 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 17.1 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 17.1 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 17.1 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenStack Platform 17.1 | — | — | No fix listed | CNA |
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Ansible Automation Platform 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 16.2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 16.2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 16.2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 16.2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 16.2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 16.2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 16.2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 16.2 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 17.1 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 17.1 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 17.1 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 17.1 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 17.1 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 17.1 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenStack Platform 17.1 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:ansible_automation_platform:2 | 2 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:10 | 10 | — | Red Hat |
| cpe:/o:redhat:rhel_els:7 | 7 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:8 | 8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:9 | 9 | — | Red Hat |
| cpe:/a:redhat:openshift_ai | — | — | Red Hat |
| cpe:/a:redhat:openstack:16.2 | 16.2 | — | Red Hat |
| cpe:/a:redhat:openstack:17.1 | 17.1 | — | Red Hat |
- cpe:/a:redhat:ansible_automation_platform:2 Versions 2 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:10 Versions 10 — ·Red Hat
- cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:8 Versions 8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:9 Versions 9 — ·Red Hat
- cpe:/a:redhat:openshift_ai Versions — — ·Red Hat
- cpe:/a:redhat:openstack:16.2 Versions 16.2 — ·Red Hat
- cpe:/a:redhat:openstack:17.1 Versions 17.1 — ·Red Hat
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 16.2 | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 17.1 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-92091
- 2026-10-07 EPSS moved to the 50th–90th percentile
- 2026-10-13 EPSS moved to the below the 50th percentile
References
More Red Hat vulnerabilities
- TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
- TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
- TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
- TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-92091 · CVE Program
- CVE-2026-92091 · NVD
- FIRST EPSS
- CVE-2026-92091 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences