CVE-2026-102581

EUVD-2026-89720
A flaw was found in Moodle. Insufficient output escaping in templates used to display forum posts enables a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious content into a forum post, which then executes arbitrary script code in the browser of another user viewing the affected post.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.6 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 5.84%
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
moodle
bionic
needs-triage
jammy
dne
noble
dne
resolute
dne
xenial
needs-triage
Common Weakness Enumeration
References
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88981
https://access.redhat.com/security/cve/CVE-2026-102581
https://bugzilla.redhat.com/show_bug.cgi?id=2543634
https://moodle.org/mod/forum/discuss.php?d=482499