Medium 5.1Published Aug 3, 2026

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

Updated under an hour ago (2026-10-19 08:30 UTC)

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It affects misskey-dev misskey. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for misskey-dev misskey

Exploited in the last 30 days

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.

CVSS: 5.1 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-674
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

misskey-dev misskey misskey_dev:misskey (from the name)	from 8.63.0, < 2026.5.4	CNA record

References

https://github.com/misskey-dev/misskey/security/advisories/GHSA-wmhf-m93m-rgmjx-refsource-confirm
https://github.com/misskey-dev/misskey/releases/tag/2026.5.4x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.