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Fencer Vulns
medium 5.3

CVE-2021-26027 json

[20210307] - Core - ACL violation within com_content frontend editing

published 2021-03-04 5 y ago modified 2026-09-08 2 mo ago also BIT-joomla-2021-26027 , EUVD-2021-12851

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

An issue was discovered in Joomla! 3.0.0 through 3.9.24. Incorrect ACL checks could allow unauthorized change of the category for an article.

Patch / fix

  • bitnami joomla 3.9.25
  • joomla joomla! 3.9.25

Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami joomla
>=3.0.0, <3.9.25
3.9.25

Affected products

  • Joomla! Project Joomla! CMS

Classification

Weakness

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.