All vulnerabilities
CVE-2026-102580

Moodle: arbitrary class instantiation via report builder audience classname

Unknown productApplications & CMS
Open in ThreatlineRecord JSON
CVSS
2.2Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 13% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in5.2.2Also 5.1.6, 5.0.9 and 1 moreCVE List
Published30 Sep 2026Updated 30 Sep 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

A flaw was found in Moodle. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of internal program objects, which may result in unexpected application behavior.

Text from CVE List

Affected versions 4

  • Productaffected: 5.2.0 before 5.2.2CVE List
  • Productaffected: 5.1.0 before 5.1.6CVE List
  • Productaffected: 5.0.0 before 5.0.9CVE List
  • Productaffected: all versions before 4.5.13CVE List

References 3