CVE-2026-103437: CWE-80 Improper neutralization of Script-Related HTML tags in a web page (basic XSS) in The Wikimedia Foundation MediaWiki ReadingLists extension
A reflected cross-site scripting (XSS) vulnerability exists in the MediaWiki ReadingLists extension versions 1.45 and 1.46. This vulnerability is due to improper neutralization of script-related HTML tags, allowing potentially malicious scripts to be reflected in web pages. The issue is classified as CWE-80 and has a low severity rating with a CVSS 4.0 score of 1.1.
AI Analysis
Technical Summary
The MediaWiki ReadingLists extension versions 1.45 and 1.46 contain a reflected XSS vulnerability caused by improper neutralization of script-related HTML tags in web pages. This flaw allows an attacker with low privileges and requiring user interaction to potentially execute script code in the context of the victim's browser. The CVSS 4.0 vector indicates network attack vector, low attack complexity, partial attack traceability, and low impact on confidentiality, integrity, and availability.
Potential Impact
The vulnerability allows reflected cross-site scripting, which could enable an attacker to execute scripts in the context of a user's browser session. However, the impact is limited due to the low CVSS score and the requirement for user interaction and partial privileges. There are no known exploits in the wild.
Mitigation Recommendations
No official patch or remediation guidance is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance before taking action.
CVE-2026-103437: CWE-80 Improper neutralization of Script-Related HTML tags in a web page (basic XSS) in The Wikimedia Foundation MediaWiki ReadingLists extension
Description
A reflected cross-site scripting (XSS) vulnerability exists in the MediaWiki ReadingLists extension versions 1.45 and 1.46. This vulnerability is due to improper neutralization of script-related HTML tags, allowing potentially malicious scripts to be reflected in web pages. The issue is classified as CWE-80 and has a low severity rating with a CVSS 4.0 score of 1.1.
CVSS v4.0
Score 1.1low
Affected software
The Wikimedia Foundation
MediaWiki ReadingLists extension
pkg:github/wikimedia/mediawiki-extensions-ReadingListsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The MediaWiki ReadingLists extension versions 1.45 and 1.46 contain a reflected XSS vulnerability caused by improper neutralization of script-related HTML tags in web pages. This flaw allows an attacker with low privileges and requiring user interaction to potentially execute script code in the context of the victim's browser. The CVSS 4.0 vector indicates network attack vector, low attack complexity, partial attack traceability, and low impact on confidentiality, integrity, and availability.
Potential Impact
The vulnerability allows reflected cross-site scripting, which could enable an attacker to execute scripts in the context of a user's browser session. However, the impact is limited due to the low CVSS score and the requirement for user interaction and partial privileges. There are no known exploits in the wild.
Mitigation Recommendations
No official patch or remediation guidance is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance before taking action.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- wikimedia-foundation
- Date Reserved
- 2026-09-30T15:41:01.269Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abd72572a4e24523d8ec0fb
Added to database: 09/30/2026, 20:34:31 UTC
Last enriched: 09/30/2026, 20:48:36 UTC
Last updated: 10/01/2026, 03:59:47 UTC
Views: 12
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