CVE-2011-4294
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…
Does this matter?
Lower severity and a low EPSS score (1.54%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.8 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:P
- EPSS
- 1.54% probability · 75th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- moodle/moodle
- Source
- secalert@redhat.com
EPSS 1.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=8f9f666c902cb30ef6f519353f38c45a29fdf4a6
- http://moodle.org/mod/forum/discuss.php?d=182737Vendor Advisory
- 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=182737Vendor Advisory
- http://openwall.com/lists/oss-security/2011/11/14/1
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.