GHSA-cg8j-5cr2-568q
Moodle TeX formula editor is vulnerable to DoS through lack of execution time limits
At a glance
- Published
- Updated
- CVE
- CVE-2026-26047
- Aliases
- BIT-moodle-2026-26047
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
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.
Affected packages
| Package | Versions |
|---|---|
| Packagist · moodle/moodle | introduced 5.1.0-beta, fixed 5.1.2 |
| Packagist · moodle/moodle | introduced 5.0.0-beta, fixed 5.0.5 |
| Packagist · moodle/moodle | introduced 0, fixed 4.5.9 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-26047 ADVISORY
- https://github.com/moodle/moodle/commit/8683b4a04939332e353cad1be51222930dc40b2c WEB
- https://access.redhat.com/security/cve/CVE-2026-26047 WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2440905 WEB
- https://github.com/moodle/moodle PACKAGE
- https://moodle.org/mod/forum/discuss.php?d=473316 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |