misskey up to 2025.2.0-alpha.0 ActivityPub ID origin validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in misskey. It has been classified as critical. Affected by this vulnerability is the function ActivityPub. This manipulation of the argument ID causes origin validation. This vulnerability is handled as CVE-2025-25306. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in misskey and classified as critical. Affected by this vulnerability is the function ActivityPub. The manipulation of the argument id with an unknown input leads to a origin validation vulnerability. The CWE definition for the vulnerability is CWE-346. The product does not properly verify that the source of data or communication is valid. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-25306 since 02/06/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Upgrading to version 2025.2.1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.6
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.3
NVD Vector: 🔍

CNA Base Score: 9.3
CNA Vector (GitHub_M): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Origin validation
CWE: CWE-346 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: misskey 2025.2.1

Timelineinfo

02/06/2025 🔍
03/10/2025 +32 days 🔍
03/10/2025 +0 days 🔍
11/26/2025 +261 days 🔍

Sourcesinfo

Advisory: GHSA-6w2c-vf6f-xf26
Status: Confirmed

CVE: CVE-2025-25306 (🔍)
GCVE (CVE): GCVE-0-2025-25306
GCVE (VulDB): GCVE-100-299101

Entryinfo

Created: 03/10/2025 23:27
Updated: 11/26/2025 17:59
Changes: 03/10/2025 23:27 (65), 11/26/2025 17:59 (12)
Complete: 🔍
Cache ID: 216::103

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