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Fencer Vulns
high 7.5

CVE-2021-23131 json

[20210305] - Core - Input validation within the template manager

published 2021-03-04 5 y ago modified 2026-09-08 2 mo ago also BIT-joomla-2021-23131 , EUVD-2021-10249

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

An issue was discovered in Joomla! 3.2.0 through 3.9.24. Missing input validation within the template manager.

Patch / fix

  • bitnami joomla 3.9.25
  • joomla joomla! 3.9.25

Exploit prediction

1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami joomla
>=3.2.0, <3.9.25
3.9.25

Affected products

  • Joomla! Project Joomla! CMS

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.