CVE-2026-21629

highpriority · track · 29EPSS 0.002 · 16 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.25% (16th) EPSS

CVSS 7.3 · high

Is it mine?

10 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

The ajax component was excluded from the default logged-in-user check in the administrative area. This behavior was potentially unexpected by 3rd party developers.

cvss

Technical severity, 0–10. One row per scoring source.

7.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 1.7–7.3

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 3.4

v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security@joomla.org

v4.01.7lowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284US

affected products (10)

Products and version ranges known to be affected.

Open Source Joomla CMS <5.4.4all versionscert_bundDE
Open Source Joomla CMS <6.0.4all versionscert_bundDE
Open Source Joomla≤ CMS <6.0.4cert_bundDE
Open Source Joomla≤ CMS <5.4.4cert_bundDE
Joomla! Project Joomla! CMS≤ 3.0.0-5.4.3enisa_euvdEU
Joomla! Project Joomla! CMS≤ 6.0.0-6.0.3enisa_euvdEU
joomla joomla!3.0.0 → 5.4.4nvdUScpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
joomla joomla!6.0.0 → 6.0.4nvdUScpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
Bitnami joomla3.0.0 → 5.4.4osvUSpkg:bitnami/joomla
Bitnami joomla6.0.0 → 6.0.4osvUSpkg:bitnami/joomla

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0936Joomla CMS: Mehrere SchwachstellenDeutsch2026-03-31csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Joomla CMS ausnutzen, um Sicherheitsvorkehrungen zu umgehen, SQL-Injection-Angriffe durchzuführen, Daten zu manipulieren oder Cross-Site-Scripting-Angriffe auszuführen.
BIT-joomla-2026-21629Joomla! Core - [20260301] - ACL hardening in com_ajax2026-04-10vendor · osvUS
The ajax component was excluded from the default logged-in-user check in the administrative area. This behavior was potentially unexpected by 3rd party developers.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2026-04-01modified 2026-10-26

references (4)

External citations — patches, advisories, analysis.

scry

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