CVE-2011-4294

Severity: medium (CVSS 5.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-07-16 · updated 2026-06-16
Weakness: CWE-20

Description

The error-message functionality in Moodle 1.9.x before 1.9.13, 2.0.x before 2.0.4, and 2.1.x before 2.1.1 does not ensure that a continuation link refers to an http or https URL for the local Moodle instance, which might allow attackers to trick users into visiting arbitrary web sites via unspecified vectors.

Affected products

Moodle: 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.6 (+11)

References

http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=8f9f666c902cb30ef6f519353f38c45a29fdf4a6
http://moodle.org/mod/forum/discuss.php?d=182737
http://openwall.com/lists/oss-security/2011/11/14/1
http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=8f9f666c902cb30ef6f519353f38c45a29fdf4a6
http://moodle.org/mod/forum/discuss.php?d=182737
http://openwall.com/lists/oss-security/2011/11/14/1

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