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CVE-2026-46712

Misskey: Lack of proper permission checks in Direct Messaging feature

LOW
2.3
CVSS Score
Published: August 3, 2026 at 09:29 PM UTC
Updated: October 23, 2026 at 09:10 PM UTC
1 product affected across 1 vendorMisskey

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Severity
LOW2.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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. This vulnerability occurs whether or not federation is enabled. Notes created with "specified" visibility (formerly "direct" visibility) are not affected. 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%
>= 2025.3.2, < 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-2m3r-xx7x-63j6
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

2.3LOWGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-639

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