CVE-2026-33073 | Discourse up to 2026.1.2/2026.2.1 information disclosure

VDB-354485 · CVE-2026-33073 · GCVE-0-2026-33073 DISCOURSE UP TO 2026.1.2/2026.2.1 INFORMATION DISCLOSURE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.8 $0-$5k 3.62+ Summaryinfo A vulnerability was found in Discourse up to 2026.1.2/2026.2.1. It has been classified as problematic. Affected is an unknown function. The manipulation leads to information disclosure. This vulnerability is referenced as CVE-2026-33073. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended. Detailsinfo A vulnerability, which was classified as problematic, has been found in Discourse up to 2026.1.2/2026.2.1. This issue affects an unknown code block. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality, integrity, and availability. 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, the discourse-subscriptions plugin leaks stripe API keys across sites in a multisite cluster resulting in the potential for stripe related information to be leaked across sites within the same multisite cluster. 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-2026-33073 since 03/17/2026. The exploitation is known to be difficult. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 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: 5.0 VulDB Meta Temp Score: 4.8 VulDB Base Score: 5.0 VulDB Temp Score: 4.8 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: Information disclosure CWE: CWE-200 / CWE-284 / CWE-266 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 03/17/2026 CVE reserved 03/31/2026 +13 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-2026-33073 (🔒) GCVE (CVE): GCVE-0-2026-33073 GCVE (VulDB): GCVE-100-354485 Entryinfo Created: 03/31/2026 20:11 Changes: 03/31/2026 20:11 (66) Complete: 🔍 Cache ID: 99:868:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸