CVE-2021-26040
[20210801] - Core - Insufficient access control for com_media deletion endpoint
An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.
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
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.
- Record
CVE-2021-26040- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - CVSS 2.0
- 6.4 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:P - Weakness
- CWE-863
- Updated
- 2026-11-02
CVE List No score
[20210801] - Core - Insufficient access control for com_media deletion endpoint
An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.
- Record
CVE-2021-26040- Updated
- 2026-11-02
EUVDEUVD-2021-12863 No score
An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.
- Record
EUVD-2021-12863- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qfrh-p934-938f No score
An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's...
An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.
- Record
GHSA-qfrh-p934-938f- Weakness
- CWE-863
- Updated
- 2026-11-02
OSV
An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.
- Record
CVE-2021-26040- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Updated
- 2026-11-02
OSVBIT-joomla-2021-26040 No score
[20210801] - Core - Insufficient access control for com_media deletion endpoint
An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.
- Record
BIT-joomla-2021-26040- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
joomlaBitnami |
4.0.0 to 4.0.0 | None known |
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-2021-26040 is a critical vulnerability (CVSS 9.1) in Joomla Joomla\!, published August 24, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.94%, the 61st percentile. No source names a fixed version.