CVE-2026-39935 | Wikimedia The CampaignEvents Extension 1.43.7/1.44.4/1.45.2 on The cross site scripting

VDB-356011 · CVE-2026-39935 · GCVE-0-2026-39935 WIKIMEDIA THE CAMPAIGNEVENTS EXTENSION 1.43.7/1.44.4/1.45.2 ON THE CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.3 $0-$5k 0.81+ Summaryinfo A vulnerability was found in Wikimedia The CampaignEvents Extension 1.43.7/1.44.4/1.45.2 on The. It has been classified as problematic. The impacted element is an unknown function. This manipulation causes cross site scripting. This vulnerability is handled as CVE-2026-39935. The attack can be initiated remotely. There is not any exploit available. Detailsinfo A vulnerability was found in Wikimedia The CampaignEvents Extension 1.43.7/1.44.4/1.45.2 on The. It has been declared as problematic. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is: Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - CampaignEvents Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - CampaignEvents Extension: 1.43.7, 1.44.4, 1.45.2. The weakness was released by Daimona. It is possible to read the advisory at phabricator.wikimedia.org. This vulnerability is known as CVE-2026-39935 since 04/07/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Content Management System Vendor Wikimedia Name The CampaignEvents Extension Version 1.43.7 1.44.4 1.45.2 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: 4.3 VulDB Base Score: 4.3 VulDB Temp Score: 4.3 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: no mitigation known Status: 🔍 0-Day Time: 🔒 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: Daimona Status: Not defined CVE: CVE-2026-39935 (🔒) GCVE (CVE): GCVE-0-2026-39935 GCVE (VulDB): GCVE-100-356011 Entryinfo Created: 04/08/2026 08:02 Changes: 04/08/2026 08:02 (67) Complete: 🔍 Cache ID: 99:4CE:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸