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CVE-2016-6334

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Date: April 20, 2017

Cross-site scripting (XSS) vulnerability in the Parser::replaceInternalLinks2 method in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via vectors involving replacement of percent encoding in unclosed internal links.

Language: PHP

Severity Score

Related Resources (7)

https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.html
https://bugzilla.redhat.com/show_bug.cgi?id=1369613
https://nvd.nist.gov/vuln/detail/CVE-2016-6334
https://security-tracker.debian.org/tracker/CVE-2016-6334
https://phabricator.wikimedia.org/T137264
http://www.securityfocus.com/bid/98057
https://www.mend.io/vulnerability-database/CVE-2016-6334

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

Top Fix

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Upgrade Version

Upgrade to version 1.23.15,1.26.4,1.27.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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