CVE-2026-21631

mediumpriority · track · 22EPSS 0.002 · 12 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.22% (12th) EPSS
CVSS 5.4 · medium
Is it mine?
10 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Lack of output escaping leads to a XSS vector in the multilingual associations component.

01

cvss

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

5.9
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7
v4.05.9mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:Usecondary · ENISA EU
v4.05.9mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/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 · security@joomla.org
v4.05.9mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/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)
02

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79US
04

affected products (10)

Products and version ranges known to be affected.

05

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-2026-21631Joomla! Core - [20260303] - XSS vector in com_associations comparison view2026-04-10vendor · osvUS

    Lack of output escaping leads to a XSS vector in the multilingual associations component.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundnvdosvNVDCVE.orgMITRE
published 2026-04-01modified 2026-10-26
08

references (7)

External citations — patches, advisories, analysis.

scry

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