GHSA-cg8j-5cr2-568q
Moodle TeX formula editor is vulnerable to DoS through lack of execution time limits
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | moodle/moodle | >= 5.1.0-beta, < 5.1.2 | 5.1.2 |
| Packagist | moodle/moodle | >= 5.0.0-beta, < 5.0.5 | 5.0.5 |
| Packagist | moodle/moodle | < 4.5.9 | 4.5.9 |
Details
As written in the advisory (Markdown source, shown as plain text).
A Denial of Service vulnerability was identified in Moodle’s TeX formula editor. When rendering TeX content using mimetex, insufficient execution time limits could allow specially crafted formulas to consume excessive server resources. An authenticated user could abuse this behavior to degrade performance or cause service interruption.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-26047
- https://github.com/moodle/moodle/commit/8683b4a04939332e353cad1be51222930dc40b2c
- https://access.redhat.com/security/cve/CVE-2026-26047
- https://bugzilla.redhat.com/show_bug.cgi?id=2440905
- https://github.com/moodle/moodle
- https://moodle.org/mod/forum/discuss.php?d=473316