CVE-2026-48115CWE-285

CVE-2026-48115

published August 4, 2026

CVSS
6.3
EPSS
0%
Percentile
35.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
6.3 · NONE
CVSS v4.0
Not supplied
EPSS
0.00421 · 35.4th percentile
Weakness
CWE-285 · Improper Authorization
Published
2026-08-04T02:16Z
References (2)
https://github.com/misskey-dev/misskey/releases/tag/2026.5.4 · [email protected]https://github.com/misskey-dev/misskey/security/advisories/GHSA-j49q-76hx-mv8f · [email protected]
EPSS history
Timeline
  • 03 AUG 21:21Z
    Misskey: Improper Authorization in the Announcements API
    cvelistv5