CVE-2011-4305

message/refresh.php in Moodle 1.9.x before 1.9.14 allows remote authenticated users to cause a...

4.0 Medium

message/refresh.php in Moodle 1.9.x before 1.9.14 allows remote authenticated users to cause a denial of service (infinite request loop) via a URL that specifies a zero wait time for message refreshing.

Exploit likelihood

1.92%Up 0.9 points since Feb 4, 2022

What each source reports

NVD Score used 4.0

Record: CVE-2011-4305
CVSS 2.0: 4.0 MediumAV:N/AC:L/Au:S/C:N/I:N/A:P
Weakness: CWE-189
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-4305
Updated: 2026-11-02

EUVDEUVD-2011-4240 No score

Record: EUVD-2011-4240
Updated: 2026-11-03

GitHub AdvisoriesGHSA-6wq9-m5r8-4gq4 No score

message/refresh.php in Moodle 1.9.x before 1.9.14 allows remote authenticated users to cause a...

Record: GHSA-6wq9-m5r8-4gq4
Updated: 2026-11-02

Affected products

moodle

Affected packages

Affected packages
Package	Affected	Fixed
`moodle` Debian:6.0 From an advisory covering 5 CVEs	before 1.9.9.dfsg2-2.1+squeeze2, plus listed versions 1.9.9.dfsg2-2.11.9.9.dfsg2-2.1+squeeze1	1.9.9.dfsg2-2.1+squeeze2

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-2011-4305 is a medium vulnerability (CVSS 4.0) in Moodle, published November 7, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.92%, the 80th percentile. No source names a fixed version.