CVE-2026-46714 PUBLISHED

Misskey: Denial of Service via Uncontrolled Recursion in Theme Compilation

Assigner: GitHub_M
Reserved: 15.05.2026 Published: 03.08.2026 Updated: 03.08.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 5.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	Low
Privileges Required	None
User Interaction	Active

CVSS 4.0

Product Status

Vendor	misskey-dev
Product	misskey
Versions	Version >= 8.63.0, < 2026.5.4 is affected

References

Problem Types

CWE-674: Uncontrolled Recursion CWE