CVE-2026-46714

Misskey is an open source, federated social media platform. IVersions 8.63.0 and later, but prior to 2026.5.4, contain a vulnerability that can cause the Misskey web client to slow down or crash when it applies a malformed theme. This issue has been fixed in version 2026.5.4...

CVE-2026-46712

Misskey is an open source, federated social media platform. Versions 2025.3.2 and later, but prior to 2026.5.4, contain a vulnerability where a lack of proper permission checks allows access to certain data points from the Direct Messages formerly Chat feature, regardless of account permissions...

CVE-2026-46714 Misskey: Denial of Service via Uncontrolled Recursion in Theme Compilation

Misskey is an open source, federated social media platform. IVersions 8.63.0 and later, but prior to 2026.5.4, contain a vulnerability that can cause the Misskey web client to slow down or crash when it applies a malformed theme. This issue has been fixed in version 2026.5.4...

CVE-2026-47746 Misskey: JSON-LD signature validation + compaction is vulnerable to timing attacks

Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4, are vulnerable to timing attacks during JSON-LD signature validation and the compaction process. Because the JSON-LD parsing context is not shared between signature verification and...

CVE-2026-47746

CVE-2026-47746 affects Misskey (open source federated social platform). Affected versions are 12.37.0 and later, up to but not including 2026.5.4. The issue is a TOCTOU vulnerability in timing attacks during JSON-LD signature validation and the JSON-LD compaction process, caused by a non-shared p...

CVE-2026-47746 Misskey: JSON-LD signature validation + compaction is vulnerable to timing attacks

Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4, are vulnerable to timing attacks during JSON-LD signature validation and the compaction process. Because the JSON-LD parsing context is not shared between signature verification and...

CVE-2026-46713 Misskey: JSON-LD signature validation + compaction may lead to improper activity handling

Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4, contain a vulnerability in the JSON-LD signature validation and compaction process that allows spoofed activities to be accepted as valid. This issue has been fixed in version 2026.5.4...