VulnSocial

CVE-2026-21631Disclosure(joomla / joomla\!)

LOWCVSS 5.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch joomla joomla\! systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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

joomla CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • joomla\!

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-01); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
joomla
Products
joomla\!

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-01: 1Mentions · 2026-04-03: 1Patch / Workaround · 2026-04-03: 1Technical Details · 2026-04-01: 104-0104-03
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-011
Disclosure1
2026-04-031
Patch1
Full discourse2 posts
  • Autumn Good@autumn_good_35
    Patch

    CVE-2026-21629 CVE-2026-21630 CVE-2026-21631 CVE-2026-21632 CVE-2026-23898 CVE-2026-23899 Joomla 6.0.4 & 5.4.4 Security & Bugfix Release https://www.joomla.org/announcements/release-news/5944-joomla-6-0-4-5-4-4-security-bugfix-release.html

    Post summary

    Joomla has released security and bug‑fix updates for versions 6.0.4 and 5.4.4, addressing CVE-2026-21629 to CVE-2026-23899, indicating that patches are available.

    00000377
    6.7K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-21631 Lack of output escaping leads to a XSS vector in the multilingual associations component. https://www.cve.org/CVERecord?id=CVE-2026-21631

    Post summary

    The entry announces CVE-2026-21631, describing an XSS flaw caused by unescaped output in a multilingual associations component.

    0000043
    56.9K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appjoomlajoomla\!---

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