CVE-2025-32044: Moodle: unauthenticated rest api user data exposure

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-25 · updated 2026-06-17
Weakness: CWE-200

Description

A flaw has been identified in Moodle where, on certain sites, unauthenticated users could retrieve sensitive user data—including names, contact information, and hashed passwords—via stack traces returned by specific API calls. Sites with PHP configured with zend.exception_ignore_args = 1 in the php.ini file are not affected by this vulnerability.

Affected products

Moodle: from 4.5.0 before 4.5.3 — fixed in 4.5.3

How to fix

Upgrade to a fixed version: Moodle 4.5.3. Check the vendor advisory for mitigations.

References

https://access.redhat.com/security/cve/CVE-2025-32044
https://bugzilla.redhat.com/show_bug.cgi?id=2356829

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