CVE-2026-92227Network attack vectorHinoki check available

MFA bypass via prematurely issued persistence cookie

Published Sep 29, 2026 · Updated Sep 29, 2026

Authentication bypass in Joomla! CMS 4.0.0 through 5.4.8 and 6.0.0 through 6.1.3 allows attackers to bypass MFA via persistent cookies. The core login flow issues a persistent-login cookie before MFA completes, allowing cookie-based authentication to bypass the second factor. The relevant site must use persistent login and MFA; the vendor does not specify whether valid primary credentials or an existing cookie are required.

CVSS severityUnavailable
Unscored
EPSS probability0.27%
Next 30 days · Oct 20, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authentication bypass in Joomla! CMS 4.0.0 through 5.4.8 and 6.0.0 through 6.1.3 allows attackers to bypass MFA via persistent cookies. The core login flow issues a persistent-login cookie before MFA completes, allowing cookie-based authentication to bypass the second factor. The relevant site must use persistent login and MFA; the vendor does not specify whether valid primary credentials or an existing cookie are required.

The record

CVE
CVE-2026-92227
Published
Sep 29, 2026
Updated
Sep 29, 2026
Vendor
Joomla! Project
Product
Joomla! CMS
Classifications
Unavailable
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.0-5.4.8
  2. Affected versionversion=6.0.0-6.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Joomla! Project · Joomla! CMSversion=4.0.0-5.4.8; version=6.0.0-6.1.3

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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