CVE-2011-4290

medium

Published 2012-07-16 · Modified 2026-04-29

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

4.3

Description

Multiple cross-site scripting (XSS) vulnerabilities in lib/weblib.php in Moodle 1.9.x before 1.9.12 allow remote attackers to inject arbitrary web script or HTML via vectors related to URL encoding.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

Vendor	Product	Versions
moodle	moodle	`1.9.1`
moodle	moodle	`1.9.2`
moodle	moodle	`1.9.3`
moodle	moodle	`1.9.4`
moodle	moodle	`1.9.5`
moodle	moodle	`1.9.6`
moodle	moodle	`1.9.7`
moodle	moodle	`1.9.8`
moodle	moodle	`1.9.9`
moodle	moodle	`1.9.10`
moodle	moodle	`1.9.11`

References

CWEs

CWE-79

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.