CVE-2026-102581

mediumpriority · track · 22EPSS 0.002 · 10 %ileUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.20% (10th) EPSS

CVSS 5.4 · medium

Is it mine?

8 products

Check your exposure

Who says so?

2 sources

nvd · osv

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v3.14.6mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:Nsecondary · patrick@puiterwijk.orgexploitability 2.1 · impact 2.5

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79US

affected products (8)

Products and version ranges known to be affected.

moodle moodle< 4.5.13nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle5.0.0 → 5.0.9nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle5.1.0 → 5.1.6nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle5.2.0 → 5.2.2nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Bitnami moodle< 4.5.13osvUSpkg:bitnami/moodle
Bitnami moodle5.0.0 → 5.0.9osvUSpkg:bitnami/moodle
Bitnami moodle5.1.0 → 5.1.6osvUSpkg:bitnami/moodle
Bitnami moodle5.2.0 → 5.2.2osvUSpkg:bitnami/moodle

advisories (1)

Vendor and ecosystem advisories describing this.

BIT-moodle-2026-102581Moodle: xss in forum post templates due to insufficient escaping2026-10-05vendor · osvUS
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.

sources

Which sources assert this record, and when.

nvd osv NVD CVE.org MITRE

published 2026-09-30modified 2026-10-01

references (4) nvd

External citations — patches, advisories, analysis.

http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88981Patch
https://access.redhat.com/security/cve/CVE-2026-102581Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2543634Issue TrackingThird Party Advisory
https://moodle.org/mod/forum/discuss.php?d=482499Vendor Advisory

scry

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