CVE-2023-28332

Moodle: algebra filter xss when filter is misconfigured

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Published Mar 23, 2023 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed

Description

If the algebra filter was enabled but not functional (eg the necessary binaries were missing from the server), it presented an XSS risk.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

unaffected

Version	Status	Constraints
`4.1.0`	affected	< 4.1.2
`4.0.0`	affected	< 4.0.7
`3.11.0`	affected	< 3.11.13
`0`	affected	< 3.9.20

Configuration 1 [-]

OR	cpe:2.3:a:moodle:moodle::::::::
	cpe:2.3:a:moodle:moodle::::::::
	cpe:2.3:a:moodle:moodle::::::::
	cpe:2.3:a:moodle:moodle:3.9.0:-::::::
	cpe:2.3:a:moodle:moodle:3.11.0:-::::::
	cpe:2.3:a:moodle:moodle:4.0.0:-::::::
	cpe:2.3:a:moodle:moodle:4.1.0:-::::::
	cpe:2.3:a:moodle:moodle:4.1.1:::::::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Github GHSA	GHSA-9f45-9qrw-pp4v	Moodle vulnerable to Cross-site Scripting when algebra filter enabled but not functional

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.634% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://bugzilla.redhat.com/show_bug.cgi?id=2179419
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QZN34VSF4HTCW3C3ZP2OZYSLYUKADPF/
https://moodle.org/mod/forum/discuss.php?d=445064

History

Feb 25, 2026 7:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Moodle Moodle

Weaknesses

CWE-79

Sources

CVE record Updated: Aug 2, 2024, 12:38 PM

Status: PUBLISHED
Assigner: fedora
Published: Mar 23, 2023, 12:00 AM
Updated: Aug 2, 2024, 12:38 PM
Reserved: Mar 14, 2023, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 12:38 PM

Updated: Aug 2, 2024, 12:38 PM

NVD Updated: Jun 17, 2026, 5:47 AM

Status: Modified
Published: Mar 23, 2023, 9:15 PM
Modified: Jun 17, 2026, 5:47 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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