Vulnerability · CVE-2026-26047
A denial-of-service vulnerability was identified in Moodle’s TeX formula editor.
Published Feb 21, 2026 · catalog updated Jun 17, 2026 · A denial-of-service vulnerability was
Check if you run it
No confirmed exploitation is on record for CVE-2026-26047. EPSS is 0.60%. Act only if a listed version of A denial-of-service vulnerability was is installed.
- Severity
- Medium6.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.60%
- Remediation
- Advisory link
- Affected products
- cpe moodle/moodle
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe moodle/moodleversion unspecified
How to fix CVE-2026-26047
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-26047. EPSS is 0.60%. Act only if a listed version of A denial-of-service vulnerability was is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-400: Uncontrolled Resource Consumption; CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 0.60%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Feb 21, 2026 · NIST NVD
Detected
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.
Jun 17, 2026 · NIST NVD
Updated
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.
Sources
- CVE.orgVulnerability recordCVE-2026-26047
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-26047
30-day exploitation probability 0.6%
first.org - NIST NVDVulnerability recordCVE-2026-26047
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 behav
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.