CVE-2026-102586

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.

CVSS 3.1

6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-09-30

Modified

2026-10-01

Record from

the NVD, synced 2026-10-19

Affected

• moodle:moodle

References

• http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88335
• https://access.redhat.com/security/cve/CVE-2026-102586
• https://bugzilla.redhat.com/show_bug.cgi?id=2543641
• https://moodle.org/mod/forum/discuss.php?d=482504

Check your stackJSON