CVE-2026-39936 | Wikimedia Score Extension up to 1.43.6/1.44.3/1.45.1 on Mediawiki cross site scripting

VDB-356013 · CVE-2026-39936 · GCVE-0-2026-39936 WIKIMEDIA SCORE EXTENSION UP TO 1.43.6/1.44.3/1.45.1 ON MEDIAWIKI CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 0.81+ Summaryinfo A vulnerability was found in Wikimedia Score Extension up to 1.43.6/1.44.3/1.45.1 on Mediawiki. It has been rated as problematic. This impacts an unknown function. Performing a manipulation results in cross site scripting. This vulnerability was named CVE-2026-39936. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised. Detailsinfo A vulnerability classified as problematic has been found in Wikimedia Score Extension up to 1.43.6/1.44.3/1.45.1 on Mediawiki. This affects an unknown function. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is: Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Score Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Score Extension. The weakness was presented by SomeRandomDeveloper. The advisory is shared at phabricator.wikimedia.org. This vulnerability is uniquely identified as CVE-2026-39936 since 04/07/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue. Upgrading to version 1.43.7, 1.44.4 or 1.45.2 eliminates this vulnerability. Productinfo Type Content Management System Vendor Wikimedia Name Score Extension Version 1.43.0 1.43.1 1.43.2 1.43.3 1.43.4 1.43.5 1.43.6 1.44.0 1.44.1 1.44.2 1.44.3 1.45.0 1.45.1 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Score Extension 1.43.7/1.44.4/1.45.2 Timelineinfo 04/07/2026 CVE reserved 04/08/2026 +1 days Advisory disclosed 04/08/2026 +0 days VulDB entry created 04/08/2026 +0 days VulDB entry last update Sourcesinfo Advisory: phabricator.wikimedia.org Researcher: SomeRandomDeveloper Status: Confirmed CVE: CVE-2026-39936 (🔒) GCVE (CVE): GCVE-0-2026-39936 GCVE (VulDB): GCVE-100-356013 Entryinfo Created: 04/08/2026 08:02 Changes: 04/08/2026 08:02 (69) Complete: 🔍 Cache ID: 99:BC0:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸