CVE-2026-26046 Moodle: moodle: improper input sanitization in tex filter administration setting
Administrators can execute arbitrary system commands via unsanitized TeX filter settings in Moodle when ImageMagick is installed.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-26046?
CVE-2026-26046 is a high-severity command injection vulnerability in Moodle Moodle, published on 21 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability was found in a Moodle TeX filter administrative setting where insufficient sanitization of configuration input could allow command injection. On sites where the TeX filter is enabled and ImageMagick is installed, a maliciously crafted setting value entered by an administrator could result in unintended system command execution. While exploitation requires administrative privileges, successful compromise could affect the entire Moodle server.
Weakness: CWE-78
Which versions are affected by CVE-2026-26046?
1 open source package ship an affected version, including moodle. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
moodle Bitnami | All versions | 4.5.9, 5.0.5, 5.1.2 |
Products include Moodle Moodle.
How do I fix CVE-2026-26046?
Upgrade moodle to a fixed version for your release line: 4.5.9, 5.0.5 or 5.1.2.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-26046 being exploited?
There is no known exploitation of CVE-2026-26046 in the wild and no public exploit code.
Other vulnerabilities in Moodle Moodle
- CVE-2006-4935 File upload in n/a
- CVE-2006-4936 Moodle does not properly validate module instance id
- CVE-2004-2233 Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors.
- CVE-2004-2235 Cross-site scripting in n/a
- CVE-2004-2236 Other in n/a
Sources
Also known as BIT-moodle-2026-26046, GHSA-4g4j-v56v-2w79, UBUNTU-CVE-2026-26046.