CVE-2026-28431

The record

Misskey is an open source, federated social media platform. All Misskey servers running versions 8.45.0 and later, but prior to 2026.3.1, contain a vulnerability that allows bad actors access to data that they ordinarily wouldn't be able to access due to insufficient permission checks and proper input validation. This vulnerability occurs regardless of whether federation is enabled or not. This vulnerability could lead to a significant data breach. This vulnerability is fixed in 2026.3.1.

Affected packages

Related vulnerabilities

• CVE-2026-85543 Some Wi-Fi series camera products have insufficient permission validation on certain… CWE-285
• CVE-2026-21097 Improper authentication in ActivityTaskManagerService prior to SMR Sep-2026 Release 1… CWE-285
• CVE-2026-86804 A vulnerability was identified in seakee CPA-Manager-Plus up to 1.11.10. CWE-285
• CVE-2026-86277 A vulnerability has been found in SourceCodester Syllabus-Aligned Learning Management &… CWE-285
• CVE-2026-86283 MISP's UiBeta theme collection view (app/View/Themed/UiBeta/Collections/view.ctp)… CWE-285
• CVE-2026-86212 A vulnerability has been found in Open5GS 2.7.7/2.8.0. CWE-285
• CVE-2026-86183 A vulnerability was identified in diem-project diem up to 5.1.3. CWE-285
• CVE-2026-53602 nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. CWE-285