CVE-2011-4593
Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle...
CVE-2011-4593 is a medium vulnerability (CVSS 4.0) in Moodle, published July 20, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.67%, the 76th percentile. No source names a fixed version.
Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle user/action_redir group messages, which allows remote authenticated users to discover e-mail addresses by visiting the messaging interface.
Exploit likelihood
What each source reports
NVD Score used
4.0
Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle user/action_redir group messages, which allows remote authenticated users to discover e-mail addresses by visiting the messaging interface.
- Record
CVE-2011-4593- CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle user/action_redir group messages, which allows remote authenticated users to discover e-mail addresses by visiting the messaging interface.
- Record
CVE-2011-4593- Updated
- 2026-11-02
EUVDEUVD-2011-4518 No score
Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle user/action_redir group messages, which allows remote authenticated users to discover e-mail addresses by visiting the messaging interface.
- Record
EUVD-2011-4518- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hgw3-h5hf-vjv2 No score
Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle...
Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 does not properly handle user/action_redir group messages, which allows remote authenticated users to discover e-mail addresses by visiting the messaging interface.
- Record
GHSA-hgw3-h5hf-vjv2- Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD |
References
bugzilla.redhat.com/show_bug.cgi?id=761248
git.moodle.org/gw?p=moodle.git%3Ba=commit%3Bh=e94113a859015a4a80b9397957b8fc4044e2951f
moodle.org/mod/forum/discuss.php?d=191762
nvd.nist.gov/vuln/detail/CVE-2011-4593
git.moodle.org/gw?p=moodle.git;a=commit;h=e94113a859015a4a80b9397957b8fc4044e2951f
github.com/advisories/GHSA-hgw3-h5hf-vjv2