CVE-2026-92091
Jwcrypto: jwcrypto: denial of service via o(n^2) duplicate check on unbounded jwk key_ops array
- 5.9MediumCVSS base score
- 0.57%Exploitation in 30 daysEPSS · top 53% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits1
References tagged exploit1 reference
Timeline
ID reserved
By redhat
- 1 day later
· 1 day later
Published
- 55 days later
· 55 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.57% · top 53% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Affected products
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:1.6.1-1.el9_9 – < *
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Ansible Automation Platform 2
All versions: affected
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 7
All versions: affected
Red Hat · Red Hat Enterprise Linux 8
All versions: affected
Red Hat · Red Hat Enterprise Linux 8
All versions: affected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: affected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: affected
Red Hat · Red Hat OpenStack Platform 16.2
All versions: affected
Red Hat · Red Hat OpenStack Platform 16.2
All versions: affected
Red Hat · Red Hat OpenStack Platform 16.2
All versions: affected
Red Hat · Red Hat OpenStack Platform 16.2
All versions: affected
Red Hat · Red Hat OpenStack Platform 16.2
All versions: affected
Red Hat · Red Hat OpenStack Platform 16.2
All versions: affected
Red Hat · Red Hat OpenStack Platform 16.2
All versions: affected
Red Hat · Red Hat OpenStack Platform 16.2
All versions: affected
Red Hat · Red Hat OpenStack Platform 17.1
All versions: affected
Red Hat · Red Hat OpenStack Platform 17.1
All versions: affected
Red Hat · Red Hat OpenStack Platform 17.1
All versions: affected
Red Hat · Red Hat OpenStack Platform 17.1
All versions: affected
Red Hat · Red Hat OpenStack Platform 17.1
All versions: affected
Red Hat · Red Hat OpenStack Platform 17.1
All versions: affected
Red Hat · Red Hat OpenStack Platform 17.1
All versions: affected
What to do
Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
References
4
- RHSA-2026:97858 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-92091 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2533849 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://github.com/latchset/jwcrypto/security/advisories/GHSA-pwgw-f7xr-863h (opens in a new tab)exploit
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80228 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-92091)Record last updated .