CVE-2026-46714

Misskey: Denial of Service via Uncontrolled Recursion in Theme Compilation

State: Published
Severity: 5.1 Medium
Published: Aug 3, 2026
Updated: Aug 5, 2026
Reserved: May 15, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L	GitHub_M

Weaknesses

CWE-674 Uncontrolled Recursion

Affected Products

Product	Versions
misskeymisskey-dev	>= 8.63.0, < 2026.5.4Affected

References

https://github.com/misskey-dev/misskey/security/advisories/GHSA-wmhf-m93m-rgmj
https://github.com/misskey-dev/misskey/releases/tag/2026.5.4

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