CVE-2015-3175
Moodle Arbitrary Redirect
Multiple open redirect vulnerabilities in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via vectors involving an error page that links to a URL from an HTTP Referer header.
Exploit likelihood
What each source reports
NVD Score used
5.8
Multiple open redirect vulnerabilities in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via vectors involving an error page that links to a URL from an HTTP Referer header.
- Record
CVE-2015-3175- CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Updated
- 2026-11-02
CVE List No score
Multiple open redirect vulnerabilities in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via vectors involving an error page that links to a URL from an HTTP Referer header.
- Record
CVE-2015-3175- Updated
- 2026-11-02
EUVDEUVD-2022-4095 No score
Multiple open redirect vulnerabilities in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via vectors involving an error page that links to a URL from an HTTP Referer header.
- Record
EUVD-2022-4095- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h798-h7ff-93xv No score
Moodle Arbitrary Redirect
Multiple open redirect vulnerabilities in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via vectors involving an error page that links to a URL from an HTTP Referer header.
- Record
GHSA-h798-h7ff-93xv- Weakness
- CWE-601
- Updated
- 2026-11-02
OSVGHSA-h798-h7ff-93xv No score
Moodle Arbitrary Redirect
Multiple open redirect vulnerabilities in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via vectors involving an error page that links to a URL from an HTTP Referer header.
- Record
GHSA-h798-h7ff-93xv- Weakness
- CWE-601
- Updated
- 2026-11-02
OSVMGASA-2015-0229 No score
Updated moodle packages fix security vulnerabilities
Updated moodle package fixes security vulnerabilities:
In Moodle before 2.6.11, leaving gradebook feedback is a trusted action and such capabilities in other modules already have an XSS mask, 'mod/quiz:grade' was missing this flag (CVE-2015-3174).
In Moodle before 2.6.11, some error messages display a button to return to the previous page. Redirecting to non-local referer should not be allowed as it can potentially be used for phising (CVE-2015-3175).
In Moodle before 2.6.11, on sites with enabled self-registration, not registered users can retrieve fullname of registered users if they know their usernames (CVE-2015-3176).
In Moodle before 2.6.11, if a user who is not XSS-trusted attempts to insert a script as part of the input text, it will be cleaned when displayed on the Moodle website but may be displayed uncleaned in the external application because external_format_text() cleans and formats text incorrectly when returning it from Web Services (CVE-2015-3178).
In Moodle before 2.6.11, when self-registration is enabled and a user's account was suspended after creating the account but before actually confirming it, the user is still able to login when confirming their email, but only once (CVE-2015-3179).
In Moodle before 2.6.11, if a user is enrolled in the course but his enrollment is suspended, they can not access the course but still were able to see the course structure in the navigation block (CVE-2015-3180).
In Moodle before 2.6.11, users with the revoked capability 'moodle/user:manageownfiles' are still able to upload private files using a deprecated function in Web Services (CVE-2015-3181).
- Record
MGASA-2015-0229- Updated
- 2026-11-02
OSVUBUNTU-CVE-2015-3175 No score
Multiple open redirect vulnerabilities in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via vectors involving an error page that links to a URL from an HTTP Referer header.
- Record
UBUNTU-CVE-2015-3175- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
through 2.5.9 | None known |
moodle/moodlePackagist |
2.6.0 up to 2.6.11 | 2.6.11 |
moodle/moodlePackagist |
2.7.0 up to 2.7.8 | 2.7.8 |
moodle/moodlePackagist |
2.8.0 up to 2.8.6 | 2.8.6 |
moodle/moodlePackagist |
through 2.5.9, plus listed versions v2.3.10v2.3.11v2.3.4v2.3.5v2.3.6 Show 28 moreShow lessv2.3.7v2.3.8v2.3.9v2.4.0v2.4.0-rc1v2.4.1v2.4.10v2.4.11v2.4.2v2.4.3v2.4.4v2.4.5v2.4.6v2.4.7v2.4.8v2.4.9v2.5.0v2.5.0-betav2.5.0-rc1v2.5.1v2.5.2v2.5.3v2.5.4v2.5.5v2.5.6v2.5.7v2.5.8v2.5.9 |
None known |
moodle/moodlePackagist |
2.6.0 up to 2.6.11, plus listed versions v2.6.0v2.6.1v2.6.10v2.6.2v2.6.3 Show 6 moreShow lessv2.6.4v2.6.5v2.6.6v2.6.7v2.6.8v2.6.9 |
2.6.11 |
moodle/moodlePackagist |
2.7.0 up to 2.7.8, plus listed versions v2.7.0v2.7.1v2.7.2v2.7.3v2.7.4v2.7.5v2.7.6v2.7.7 |
2.7.8 |
moodle/moodlePackagist |
2.8.0 up to 2.8.6, plus listed versions v2.8.0v2.8.1v2.8.2v2.8.3v2.8.4v2.8.5 |
2.8.6 |
moodleMageia:4 From an advisory covering 7 CVEs |
before 2.6.11-1.mga4 | 2.6.11-1.mga4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2015-3175 is a medium vulnerability (CVSS 5.8) in Moodle, published May 18, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.88%, the 79th percentile. Fixed in moodle/moodle 2.6.11.
References
moodle.org/mod/forum/discuss.php?d=313682
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-49179
securityfocus.com/bid/74720
securitytracker.com/id/1032358
openwall.com/lists/oss-security/2015/05/18/1
nvd.nist.gov/vuln/detail/CVE-2015-3175
Show 19 moreShow less
github.com/moodle/moodle/commit/b2687a055dc990ca86ddce178d5aee3fb1df644a
github.com/moodle/moodle/commit/dd0607b7bbaff38cc62e4d00658c02da3fdbb4c8
web.archive.org/web/20201030042703/http://www.securitytracker.com/id/1032358
web.archive.org/web/20210122155902/http://www.securityfocus.com/bid/74720
github.com/moodle/moodle/commit/db200a8e9f88c8c4a2141ac264062dca74ee2f29
github.com/advisories/GHSA-h798-h7ff-93xv
github.com/moodle/moodle
advisories.mageia.org/MGASA-2015-0229.html
bugs.mageia.org/show_bug.cgi?id=15909
moodle.org/mod/forum/discuss.php?d=313681
moodle.org/mod/forum/discuss.php?d=313683
moodle.org/mod/forum/discuss.php?d=313685
moodle.org/mod/forum/discuss.php?d=313686
moodle.org/mod/forum/discuss.php?d=313687
moodle.org/mod/forum/discuss.php?d=313688
docs.moodle.org/dev/Moodle_2.6.11_release_notes
moodle.org/mod/forum/discuss.php?d=313322
ubuntu.com/security/CVE-2015-3175
cve.org/CVERecord?id=CVE-2015-3175