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CVE-2015-8622

17
FAUCET Score

CVE-2015-8622 describes a cross-site scripting (XSS) vulnerability affecting MediaWiki versions before 1.23.12, 1.24.5, 1.25.4, and 1.26.1, specifically when configured with a relative URL. This medium-severity flaw (CVSS 6.1) allows remote authenticated users to inject arbitrary web script or HTML via wikitext, such as a malicious wikilink. While the vulnerability requires user interaction (UI:R), successful exploitation could lead to information disclosure or defacement. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.23.11CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
1.24.0CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:1.24.0:*:*:*:*:*:*:*
1.24.1CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:1.24.1:*:*:*:*:*:*:*
1.24.2CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:1.24.2:*:*:*:*:*:*:*
1.24.3CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:1.24.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.48%
Probability of exploitation in next 30 days
EPSS Percentile
71.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0148 is in the 83rd percentile among its peer group of 26,236 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.wikimedia.org / pipermail/mediawiki-announce/2015-December/000186.html
PatchRelease NotesVendor Advisory
phabricator.wikimedia.org / T117899
Issue TrackingPatchThird Party Advisory
openwall.com / lists/oss-security/2015/12/21/8
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2015/12/23/7
Mailing ListPatchThird Party Advisory