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CVE-2026-21631 (GCVE-0-2026-21631)

Vulnerability from cvelistv5 – Published: 2026-04-01 09:03 – Updated: 2026-04-02 05:09
VLAI
Title
Joomla! Core - [20260303] - XSS vector in com_associations comparison view
Summary
Lack of output escaping leads to a XSS vector in the multilingual associations component.
Severity
5.9 (Medium)
CVSS: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
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-01 00:00 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version CPE status
Joomla! Project Joomla! CMS Affected: 4.0.0-5.4.3
Affected: 6.0.0-6.0.3
guessed Create a notification for this product.
Credits
Shirsendu Mondal & Md Tanzimul Alam Fahim, UNC Pembroke
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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