Is CVE-2025-25306 in the CISA KEV catalog?

No. CVE-2025-25306 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-25306?

CVE-2025-25306 has a CVSS v3 base score of 9.3 (CRITICAL).

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

CVE-2025-25306 has an EPSS score of 0.17% (6th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-25306?

Upgrade misskey to 2025.2.1 or later.

CVE & CISA-KEV Catalog

CVE-2025-25306

CRITICAL

9.3

CVSS v3

NVD

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.

CWE-346 CWE-441 CWE-1025

How to fix

Remediation Available

misskeyNVD

Affected:< 2025.2.1Fixed in:2025.2.1CVE-2025-25306derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

Exploit Intelligence

0.17%probability of exploitation in 30 days

6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

github.com

Embed a live status badge for CVE-2025-25306

Markdown

[![CVE-2025-25306](https://tridentstack.com/cve/badge/CVE-2025-25306.svg)](https://tridentstack.com/cve/CVE-2025-25306)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-25306"><img src="https://tridentstack.com/cve/badge/CVE-2025-25306.svg" alt="CVE-2025-25306"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-26.