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Medium severity4.3NVD Advisory· Published Feb 22, 2016· Updated May 6, 2026

CVE-2015-5335

CVE-2015-5335

Description

Cross-site request forgery (CSRF) vulnerability in admin/registration/register.php in Moodle through 2.6.11, 2.7.x before 2.7.11, 2.8.x before 2.8.9, and 2.9.x before 2.9.3 allows remote attackers to hijack the authentication of administrators for requests that send statistics to an arbitrary hub URL.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
moodle/moodlePackagist
< 2.7.112.7.11
moodle/moodlePackagist
>= 2.8.0, < 2.8.92.8.9
moodle/moodlePackagist
>= 2.9.0, < 2.9.32.9.3

Affected products

24
  • Moodle/Moodle24 versions
    cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*+ 23 more
    • cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*range: <=2.6.11
    • cpe:2.3:a:moodle:moodle:2.7.0:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.1:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.10:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.2:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.3:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.4:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.5:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.6:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.7:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.8:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.7.9:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.0:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.1:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.2:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.3:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.4:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.5:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.6:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.7:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.8.8:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.9.0:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.9.1:*:*:*:*:*:*:*
    • cpe:2.3:a:moodle:moodle:2.9.2:*:*:*:*:*:*:*

Patches

4
4bb9e1ad8af1

MDL-51091 core_registration: session key check in registration.

https://github.com/moodle/moodleCameron BallNov 2, 2015via ghsa
commit
2 files changed · +3 −1
  • admin/registration/register.php+2 −0 modified
    @@ -39,6 +39,8 @@
 require_once($CFG->dirroot . '/webservice/lib.php');
 require_once($CFG->dirroot . '/' . $CFG->admin . '/registration/lib.php');
 
+require_sesskey();
+
 $huburl = required_param('huburl', PARAM_URL);
 $huburl = rtrim($huburl, "/");
  • admin/settings/top.php+1 −1 modified
    @@ -11,7 +11,7 @@
 $ADMIN->add('root', new admin_externalpage('adminnotifications', new lang_string('notifications'), "$CFG->wwwroot/$CFG->admin/index.php"));
 
 $ADMIN->add('root', new admin_externalpage('registrationmoodleorg', new lang_string('registration', 'admin'),
-        "$CFG->wwwroot/$CFG->admin/registration/register.php?huburl=" . HUB_MOODLEORGHUBURL . "&hubname=Moodle.org"));
+        "$CFG->wwwroot/$CFG->admin/registration/register.php?huburl=" . HUB_MOODLEORGHUBURL . "&hubname=Moodle.org&sesskey=" . sesskey()));
 $ADMIN->add('root', new admin_externalpage('registrationhub', new lang_string('registerwith', 'hub'),
         "$CFG->wwwroot/$CFG->admin/registration/register.php", 'moodle/site:config', true));
 $ADMIN->add('root', new admin_externalpage('registrationhubs', new lang_string('hubs', 'admin'),
77e072ebec68

MDL-51091 core_registration: session key check in registration.

https://github.com/moodle/moodleCameron BallNov 2, 2015via ghsa
commit
2 files changed · +3 −1
  • admin/registration/register.php+2 −0 modified
    @@ -39,6 +39,8 @@
 require_once($CFG->dirroot . '/webservice/lib.php');
 require_once($CFG->dirroot . '/' . $CFG->admin . '/registration/lib.php');
 
+require_sesskey();
+
 $huburl = required_param('huburl', PARAM_URL);
 $huburl = rtrim($huburl, "/");
  • admin/settings/top.php+1 −1 modified
    @@ -11,7 +11,7 @@
 $ADMIN->add('root', new admin_externalpage('adminnotifications', new lang_string('notifications'), "$CFG->wwwroot/$CFG->admin/index.php"));
 
 $ADMIN->add('root', new admin_externalpage('registrationmoodleorg', new lang_string('registration', 'admin'),
-        "$CFG->wwwroot/$CFG->admin/registration/register.php?huburl=" . HUB_MOODLEORGHUBURL . "&hubname=Moodle.org"));
+        "$CFG->wwwroot/$CFG->admin/registration/register.php?huburl=" . HUB_MOODLEORGHUBURL . "&hubname=Moodle.org&sesskey=" . sesskey()));
 $ADMIN->add('root', new admin_externalpage('registrationhub', new lang_string('registerwith', 'hub'),
         "$CFG->wwwroot/$CFG->admin/registration/register.php", 'moodle/site:config', true));
 $ADMIN->add('root', new admin_externalpage('registrationhubs', new lang_string('hubs', 'admin'),
7bf5c6a542ef

MDL-51091 core_registration: session key check in registration.

https://github.com/moodle/moodleCameron BallNov 2, 2015via ghsa
commit
2 files changed · +3 −1
  • admin/registration/register.php+2 −0 modified
    @@ -39,6 +39,8 @@
 require_once($CFG->dirroot . '/webservice/lib.php');
 require_once($CFG->dirroot . '/' . $CFG->admin . '/registration/lib.php');
 
+require_sesskey();
+
 $huburl = required_param('huburl', PARAM_URL);
 $huburl = rtrim($huburl, "/");
  • admin/settings/top.php+1 −1 modified
    @@ -11,7 +11,7 @@
 $ADMIN->add('root', new admin_externalpage('adminnotifications', new lang_string('notifications'), "$CFG->wwwroot/$CFG->admin/index.php"));
 
 $ADMIN->add('root', new admin_externalpage('registrationmoodleorg', new lang_string('registration', 'admin'),
-        "$CFG->wwwroot/$CFG->admin/registration/register.php?huburl=" . HUB_MOODLEORGHUBURL . "&hubname=Moodle.org"));
+        "$CFG->wwwroot/$CFG->admin/registration/register.php?huburl=" . HUB_MOODLEORGHUBURL . "&hubname=Moodle.org&sesskey=" . sesskey()));
 $ADMIN->add('root', new admin_externalpage('registrationhub', new lang_string('registerwith', 'hub'),
         "$CFG->wwwroot/$CFG->admin/registration/register.php", 'moodle/site:config', true));
 $ADMIN->add('root', new admin_externalpage('registrationhubs', new lang_string('hubs', 'admin'),
a1168a7427f8

MDL-51091 core_registration: session key check in registration.

https://github.com/moodle/moodleCameron BallNov 2, 2015via ghsa
commit
2 files changed · +3 −1
  • admin/registration/register.php+2 −0 modified
    @@ -39,6 +39,8 @@
 require_once($CFG->dirroot . '/webservice/lib.php');
 require_once($CFG->dirroot . '/' . $CFG->admin . '/registration/lib.php');
 
+require_sesskey();
+
 $huburl = required_param('huburl', PARAM_URL);
 $huburl = rtrim($huburl, "/");
  • admin/settings/top.php+1 −1 modified
    @@ -11,7 +11,7 @@
 $ADMIN->add('root', new admin_externalpage('adminnotifications', new lang_string('notifications'), "$CFG->wwwroot/$CFG->admin/index.php"));
 
 $ADMIN->add('root', new admin_externalpage('registrationmoodleorg', new lang_string('registration', 'admin'),
-        "$CFG->wwwroot/$CFG->admin/registration/register.php?huburl=" . HUB_MOODLEORGHUBURL . "&hubname=Moodle.org"));
+        "$CFG->wwwroot/$CFG->admin/registration/register.php?huburl=" . HUB_MOODLEORGHUBURL . "&hubname=Moodle.org&sesskey=" . sesskey()));
 $ADMIN->add('root', new admin_externalpage('registrationhub', new lang_string('registerwith', 'hub'),
         "$CFG->wwwroot/$CFG->admin/registration/register.php", 'moodle/site:config', true));
 $ADMIN->add('root', new admin_externalpage('registrationhubs', new lang_string('hubs', 'admin'),

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

7

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