CVE-2026-102586

Moodle: xss via password reset link due to insufficient username escaping

State: Published
Severity: 4.3 Medium
Published: Sep 30, 2026
Updated: Sep 30, 2026
Reserved: Sep 29, 2026

Description

A flaw was found in Moodle. Insufficient sanitization of username input on the password reset page allows a remote attacker to conduct a cross-site scripting (XSS) attack. By convincing an unauthenticated user to access a specially crafted password reset link, an attacker could execute arbitrary script in the victim's browser.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N	fedora

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
moodle	5.2.0 to before 5.2.2Affected 5.1.0 to before 5.1.6Affected 5.0.0 to before 5.0.9Affected before 4.5.13Affected

References

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