CVE-2026-26047 describes a denial-of-service vulnerability in Moodle's TeX formula editor, affecting Moodle installations. An authenticated user can exploit insufficient execution time limits in the mimetex renderer by submitting specially crafted TeX content, leading to excessive server resource consumption and potential service interruption. Rated 6.5 Medium (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H), this vulnerability has a low attack complexity and requires user authentication, with the primary impact being high availability degradation. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.5.9CPE matchmatch criteria | cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* | ||
>= 5.0.0, < 5.0.5CPE matchmatch criteria | cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* | ||
>= 5.1.0, < 5.1.2CPE matchmatch criteria | cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Moodle TeX formula editor is vulnerable to DoS through lack of execution time limits
Feb 21, 2026Denial of service risk in TeX formula editor
Jan 1, 2026Denial of service risk in TeX formula editor
Jan 1, 2026Denial of service risk in TeX formula editor
Jan 1, 2024Denial of service risk in TeX formula editor
Denial of service risk in TeX formula editor
Denial of service risk in TeX formula editor
Denial of service risk in TeX formula editor
Denial of service risk in TeX formula editor