UpHeron
All vulnerabilities

Servers and applications

CVE-2011-4361

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.

Severity
Medium 5.0
Published
8 Jan 2012
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
1.17.1
Exploit chance
2.2% in the next 30 daysHigher than 82% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Incorrect default permissions (CWE-276)
Attack
Over the network · No login needed
Attacker can
Read some data
CVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
MediaWikiServers and applications · cpe:a:mediawiki:mediawiki
  • Every version before 1.17.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-4361
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-4361