CVE-2021-23123
[20210101] - Core - com_modules exposes module names
An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.
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
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.
- Record
CVE-2021-23123- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
CVE List No score
[20210101] - Core - com_modules exposes module names
An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.
- Record
CVE-2021-23123- Updated
- 2026-11-02
EUVDEUVD-2021-10241 No score
An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.
- Record
EUVD-2021-10241- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-vrjw-8hw2-rwm5 No score
An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the...
An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.
- Record
GHSA-vrjw-8hw2-rwm5- Weakness
- CWE-862
- Updated
- 2026-11-02
OSV
An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.
- Record
CVE-2021-23123- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVBIT-joomla-2021-23123 No score
[20210101] - Core - com_modules exposes module names
An issue was discovered in Joomla! 3.0.0 through 3.9.23. The lack of ACL checks in the orderPosition endpoint of com_modules leak names of unpublished and/or inaccessible modules.
- Record
BIT-joomla-2021-23123- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
joomlaBitnami |
3.0.0 to 3.9.23 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-23123 is a medium vulnerability (CVSS 5.3) in Joomla Joomla\!, published January 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.18%, the 67th percentile. No source names a fixed version.