Is CVE-2025-25306 actively exploited?

CVE-2025-25306 has no public evidence of in-the-wild exploitation as of 2025-11-26.

What is the CVSS score for CVE-2025-25306?

CVE-2025-25306 has a CVSS score of 9.3 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N.

How do I patch CVE-2025-25306?

Patch guidance is available from misskey security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-25306.

Fix CVE-2025-25306 - CRITICAL misskey misskey

Description

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the `id` and `url` fields of ActivityPub objects. An attacker can forge an object where they claim authority in the `url` field even if the specific ActivityPub object type require authority in the `id` field. Version 2025.2.1 addresses the issue.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: changed
Confidentiality: low
Integrity: high
Availability: none
Weaknesses: CWE-346 CWE-441 CWE-1025

Metadata

Primary Vendor: MISSKEY
Published: 3/10/2025
Last Modified: 11/26/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-25306

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary