CVE-2011-4361
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests,...
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.
Exploit likelihood
What each source reports
NVD Score used
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.
- Record
CVE-2011-4361- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-276
- Updated
- 2026-11-02
CVE List No score
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.
- Record
CVE-2011-4361- Updated
- 2026-11-02
EUVDEUVD-2011-4291 No score
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.
- Record
EUVD-2011-4291- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5qr9-g785-2f9v No score
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests,...
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.
- Record
GHSA-5qr9-g785-2f9v- Weakness
- CWE-276
- Updated
- 2026-11-02
OSV No score
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.
- Record
CVE-2011-4361- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-4361 No score
MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.
- Record
DEBIAN-CVE-2011-4361- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mediawikiDebian:12 |
before 1:1.15.5-4 | 1:1.15.5-4 |
mediawikiDebian:13 |
before 1:1.15.5-4 | 1:1.15.5-4 |
mediawikiDebian:14 |
before 1:1.15.5-4 | 1:1.15.5-4 |
mediawikiDebian:6.0 From an advisory covering 6 CVEs |
before 1:1.15.5-2squeeze2, plus listed versions 1:1.15.5-21:1.15.5-2squeeze1 |
1:1.15.5-2squeeze2 |
mediawikiDebian:5.0 From an advisory covering 6 CVEs |
before 1:1.12.0-2lenny9, plus listed versions 1:1.12.0-2lenny21:1.12.0-2lenny31:1.12.0-2lenny3~bpo40+11:1.12.0-2lenny41:1.12.0-2lenny51:1.12.0-2lenny61:1.12.0-2lenny71:1.12.0-2lenny8 |
1:1.12.0-2lenny9 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| 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-2011-4361 is a medium vulnerability (CVSS 5.0) in Mediawiki, published December 18, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.23%, the 82nd percentile. Fixed in mediawiki 1:1.15.5-4.
References
lists.wikimedia.org/pipermail/mediawiki-announce/2011-November/000104.html
bugzilla.redhat.com/show_bug.cgi?id=758171
openwall.com/lists/oss-security/2011/11/29/6
bugzilla.wikimedia.org/show_bug.cgi?id=32616
debian.org/security/2011/dsa-2366
nvd.nist.gov/vuln/detail/CVE-2011-4361
github.com/advisories/GHSA-5qr9-g785-2f9v
security-tracker.debian.org/tracker/CVE-2011-4361