CVE-2026-92091Network attack vector

Denial of service via quadratic key_ops validation

Published Sep 16, 2026 · Updated Sep 16, 2026

Uncontrolled CPU consumption in jwcrypto allows remote attackers to interrupt applications that import attacker-supplied JWKs. JWK.import_key() checks the unbounded key_ops array for duplicates with a quadratic algorithm, causing processing time to grow disproportionately. Exposure requires an application path that imports untrusted key material, and successful exploitation consumes CPU until the application service is interrupted.

CVSS severityUnavailable
Unscored
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled CPU consumption in jwcrypto allows remote attackers to interrupt applications that import attacker-supplied JWKs. JWK.import_key() checks the unbounded key_ops array for duplicates with a quadratic algorithm, causing processing time to grow disproportionately. Exposure requires an application path that imports untrusted key material, and successful exploitation consumes CPU until the application service is interrupted.

The record

CVE
CVE-2026-92091
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
Red Hat
Product
Red Hat Enterprise Linux 10
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Red Hat · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
Red Hat · Red Hat OpenStack Platform 17.1Affected versions are unavailable in this record.
Red Hat · Red Hat Ansible Automation PlatformAffected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
Red Hat · Red Hat OpenShift AIAffected versions are unavailable in this record.
Red Hat · Red Hat OpenStack Platform 16.2Affected versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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