CVE-2026-102580

Moodle: arbitrary class instantiation via report builder audience classname

MEDIUM

4.3

CVSS Score

Published: September 30, 2026 at 08:36 AM UTC

Updated: October 1, 2026 at 02:36 PM UTC

1 product affected across 1 vendorMoodle

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Severity

MEDIUM4.3

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Moodle · Moodle

95%

v < 4.5.135.0.0 ≤ v < 5.0.95.1.0 ≤ v < 5.1.65.2.0 ≤ v < 5.2.2

Affected range stops below 4.5.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Patch

Source: cverecord

http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-89078

VDB Entryx_refsource_REDHATThird Party Advisory

Source: cverecord

https://access.redhat.com/security/cve/CVE-2026-102580

Issue Trackingx_refsource_REDHATThird Party Advisory

Source: cverecord

https://bugzilla.redhat.com/show_bug.cgi?id=2543635

Vendor Advisory

Source: cverecord

https://moodle.org/mod/forum/discuss.php?d=482498

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-470

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