CVE-2021-26027
[20210307] - Core - ACL violation within com_content frontend editing
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-26027- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
CVE List No score
[20210307] - Core - ACL violation within com_content frontend editing
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.
- Record
CVE-2021-26027- Updated
- 2026-11-02
EUVDEUVD-2021-12851 No score
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.
- Record
EUVD-2021-12851- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fw6m-68fr-vcf7
An issue was discovered in Joomla! 3.0.0 through 3.9.24. Incorrect ACL checks could allow...
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.
- Record
GHSA-fw6m-68fr-vcf7- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-668
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2021-26027- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVBIT-joomla-2021-26027 No score
[20210307] - Core - ACL violation within com_content frontend editing
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.
- Record
BIT-joomla-2021-26027- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
joomlaBitnami |
3.0.0 up to 3.9.25 | 3.9.25 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26027 is a medium vulnerability (CVSS 5.3) in Joomla Joomla\!, published March 4, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.95%, the 61st percentile. Fixed in joomla 3.9.25.