CVE-2026-48115
Medium
Description
Misskey is an open source, federated social media platform. All Misskey servers running versions 2024.5.0 and later, but prior to 2026.5.4, contain a vulnerability in the Server Announcements API where insufficient permission checks allow attackers to access limited portions of data that they normally couldn't view. This vulnerability occurs whether or not federation is enabled. This issue has been fixed in version 2026.5.4.
SeverityMedium
CVSS6.3
Exploit probability—
Product
Misskey
PublishedAug 3, 2026
First seenAug 3, 2026
Weakness typeCWE-285CWE-285
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| misskey-dev misskey | >= 2024.5.0, < 2026.5.4 | — |
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