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CVE-2026-46714

Misskey: Denial of Service via Uncontrolled Recursion in Theme Compilation

MEDIUM

5.1

CVSS Score

Published: August 3, 2026 at 09:58 PM UTC

Updated: October 23, 2026 at 09:10 PM UTC

1 product affected across 1 vendorMisskey

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Severity

MEDIUM5.1

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Misskey · Misskey Dev

90%

>= 8.63.0, < 2026.5.4

Affected range stops below 2026.5.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_CONFIRM

Source: cverecord

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

x_refsource_MISC

Source: cverecord

https://github.com/misskey-dev/misskey/releases/tag/2026.5.4

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.1MEDIUMGitHub_M

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-674

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