CVE-2011-4133

Moodle vulnerable to Cross-Site Request Forgery

6.8 MediumFix available

Cross-site request forgery (CSRF) vulnerability in Moodle 1.9.x before 1.9.11 allows remote attackers to hijack the authentication of unspecified victims for requests that modify an RSS feed in an RSS block.

Exploit likelihood

1.01%Down 0.1 points since Feb 4, 2022

What each source reports

NVD Score used 6.8

Record: CVE-2011-4133
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-352
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-4133
Updated: 2026-11-02

EUVDEUVD-2011-4081 No score

Record: EUVD-2011-4081
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7cvw-wrj9-q5fp 6.6

Moodle vulnerable to Cross-Site Request Forgery

Record: GHSA-7cvw-wrj9-q5fp
CVSS 4.0: 6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Weakness: CWE-352
Updated: 2026-11-02

OSVGHSA-7cvw-wrj9-q5fp 6.6

Moodle vulnerable to Cross-Site Request Forgery

Record: GHSA-7cvw-wrj9-q5fp
CVSS 4.0: 6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Weakness: CWE-352
Updated: 2026-11-02

Affected products

moodle

Affected packages

Affected packages
Package	Affected	Fixed
`moodle/moodle` Packagist	1.9.0 up to 1.9.11	1.9.11
`moodle` Debian:6.0 From an advisory covering 6 CVEs	before 1.9.9.dfsg2-2.1+squeeze1, plus listed versions 1.9.9.dfsg2-2.1	1.9.9.dfsg2-2.1+squeeze1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-4133 is a medium vulnerability (CVSS 6.8) in Moodle, published June 16, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.01%, the 63rd percentile. Fixed in moodle/moodle 1.9.11.