Is CVE-2026-28432 actively exploited?

No active exploitation of CVE-2026-28432 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28432 be exploited remotely?

Yes. CVE-2026-28432 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28432?

CVE-2026-28432 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-28432

HIGH

CVE-2026-28432

CWE-347Published: March 10, 2026· Updated: Mar 13, 2026

7.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.0th

Official Description

Misskey is an open source, federated social media platform. All Misskey servers prior to 2026.3.1 contain a vulnerability that allows bypassing HTTP signature verification. Although this is a vulnerability related to federation, it affects all servers regardless of whether federation is enabled or disabled. This vulnerability is fixed in 2026.3.1.

NVD Source

Technical Analysis

CVE-2026-28432 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.