CVE-2013-4303

MEDIUM

6.1

CVSS Score

Published: December 11, 2019 at 06:30 PM UTC

Updated: June 16, 2026 at 11:56 PM UTC

2 products affected across 2 vendorsMediaWikiMediaWiki

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Severity

MEDIUM6.1

Exploit prediction

EPSS 2%

Description

includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of "." (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

MediaWiki · Mediawiki

95%

1.19.0 ≤ v < 1.19.81.20.0 ≤ v < 1.20.71.21.0 ≤ v < 1.21.2

Affected range stops below 1.19.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.20.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.21.2, so it looks safe — our inference, not a vendor statement

MediaWiki · Wikimedia

60%

v < 1.21.21.19 ≤ v < 1.19.81.20 ≤ v < 1.20.7

Affected range stops below 1.19.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.20.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.21.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

Mailing Listx_refsource_MLISTx_refsource_MISCPatchVendor Advisory

Source: [email protected]

http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-September/000133.html

Mailing Listx_refsource_MLISTx_refsource_MISCThird Party Advisory

Source: [email protected]

http://seclists.org/oss-sec/2013/q3/553

x_refsource_MISCThird Party AdvisoryVDB Entry

Source: [email protected]

http://www.securityfocus.com/bid/62194

x_refsource_MISCExploitIssue TrackingPatchVendor Advisory

Source: [email protected]

https://bugzilla.wikimedia.org/show_bug.cgi?id=52746

x_refsource_MISCThird Party AdvisoryVDB Entry

Source: [email protected]

https://exchange.xforce.ibmcloud.com/vulnerabilities/86897

CVSS

6.1MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-79

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