CVE-2012-3387: n/a vulnerability

CVE-2012-3387: Moodle 2.3.x before 2.3.1 uses only a client-side check for whether references are permitted in a file uplo...

Moodle 2.3.x before 2.3.1 uses only a client-side check for whether references are permitted in a file upload, which allows remote authenticated users to bypass intended alias (aka shortcut) restrictions via a client that omits this check.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 20:05 UTC (UTC+00:00)

Security readout for executives and security teams

This is a legacy Moodle issue where the server trusted a browser-side upload restriction. An authenticated user could use a modified client to bypass intended shortcut or alias restrictions during file upload. The sources do not provide severity scoring or business impact details. Exposure appears limited to Moodle 2.3.x versions before 2.3.1, especially sites allowing authenticated users to upload files. The provided sources do not identify other affected branches or products. Do not treat as an emergency without evidence of exposed legacy Moodle. Prioritize inventory confirmation and remediation if Moodle 2.3.x before 2.3.1 is still running. Mitigation focus: Identify any Moodle 2.3.x installations before 2.3.1.; Upgrade affected Moodle deployments to 2.3.1 or later if still present.; Review Moodle vendor guidance and MDL-33948 history for implementation details..

Prepared: Jun 24, 2026, 12:34 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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description · low confidence lookup

File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup

cve · low confidence lookup

CVE-2012-3387 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 23, 2012, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
moodle-shortcut-sec-bypass(76954)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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