CVE-2026-32607 | Discourse up to 2026.1.2/2026.2.1 prioritize_full_name_in_ux cross site scripting

VDB-354473 · CVE-2026-32607 · GCVE-0-2026-32607 DISCOURSE UP TO 2026.1.2/2026.2.1 PRIORITIZE_FULL_NAME_IN_UX CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.4 $0-$5k 2.47+ Summaryinfo A vulnerability was found in Discourse up to 2026.1.2/2026.2.1. It has been rated as problematic. This impacts the function prioritize_full_name_in_ux. The manipulation leads to cross site scripting. This vulnerability is listed as CVE-2026-32607. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised. Detailsinfo A vulnerability was found in Discourse up to 2026.1.2/2026.2.1. It has been rated as problematic. This issue affects the function prioritize_full_name_in_ux. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. The summary by CVE is: Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, when the hidden prioritize_full_name_in_ux site setting is enabled (defaults to false, requires console access to change), user and group display names are rendered without HTML escaping in several assignment-related UI paths. This allows users with assign permission to inject arbitrary HTML/JavaScript that executes in the browser of any user viewing an affected topic. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0. The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-32607 since 03/12/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue. Upgrading to version 2026.1.3, 2026.2.2 or 2026.3.0 eliminates this vulnerability. Productinfo Type Chat Software Name Discourse Version 2026.1.0 2026.1.1 2026.1.2 2026.2.0 2026.2.1 License open-source Website Product: https://github.com/discourse/discourse/ 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: 3.5 VulDB Meta Temp Score: 3.4 VulDB Base Score: 3.5 VulDB Temp Score: 3.4 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: Discourse 2026.1.3/2026.2.2/2026.3.0 Timelineinfo 03/12/2026 CVE reserved 03/31/2026 +18 days Advisory disclosed 03/31/2026 +0 days VulDB entry created 03/31/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-32607 (🔒) GCVE (CVE): GCVE-0-2026-32607 GCVE (VulDB): GCVE-100-354473 Entryinfo Created: 03/31/2026 20:09 Changes: 03/31/2026 20:09 (67) Complete: 🔍 Cache ID: 99:920:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸