CVE-2026-102580

mediumpriority · track · 17EPSS 0.002 · 15 %ileUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.24% (15th) EPSS

CVSS 4.3 · 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. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of internal program objects, which may result in unexpected application behavior.

cvss

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

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.2–4.3

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.12.2lowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:Nsecondary · patrick@puiterwijk.orgexploitability 0.7 · impact 1.4

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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-470US

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-2026-102580Moodle: arbitrary class instantiation via report builder audience classname2026-10-05vendor · osvUS
A flaw was found in Moodle. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of internal program objects, which may result in unexpected application behavior.

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-89078Patch
https://access.redhat.com/security/cve/CVE-2026-102580Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2543635Issue TrackingThird Party Advisory
https://moodle.org/mod/forum/discuss.php?d=482498Vendor Advisory

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan