CVE-2024-52590

HIGH EPSS 25.2%
Published Dec 18, 20241y ago · Modified Jun 17, 20262w ago
8.8 CVSS 4.0
High
Find Similar
Published Dec 18, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

Misskey is an open source, federated social media platform. In affected versions missing validation in `ApRequestService.signedGet` allows an attacker to create fake user profiles that appear to be from a different instance than the one where they actually exist. These profiles can be used to impersonate existing users from the target instance. Vulnerable Misskey instances will accept spoofed users as valid, allowing an attacker to impersonate users on another instance. Attackers have full control of the spoofed user and can post, renote, or otherwise interact like a real account. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS Details

Base Score
8.8
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
25.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-20 Improper Input Validation Validation

Affected Products 7

VendorProductVersionRange
misskeymisskey*>2024.8.0  –  <2024.11.0
misskeymisskey2024.8.0any
misskeymisskey2024.8.0any
misskeymisskey2024.8.0any
misskeymisskey2024.11.0any
misskeymisskey2024.11.0any
misskeymisskey2024.11.0any

References 1

  • github.com https://github.com/misskey-dev/misskey/security/advisories/GHSA-7vgr-p3vc-p4h2
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.