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CVE-2023-49079— Misskey's missing signature validation allows arbitrary users to impersonate any remote user.

Quick assessment

Affected
misskey-dev misskey
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Misskey是一套微型博客平台。 Misskey 2023.11.0及之前版本存在数据伪造问题漏洞，该漏洞源于缺少签名验证，允许任意用户冒充任何远程用户。

CVSS 9.3 · Critical EPSS 0.40% · P33

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2023-49079

Vulnerability Information
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Vulnerability Title
Misskey's missing signature validation allows arbitrary users to impersonate any remote user.
Source: CVE Program / CVE List V5
Vulnerability Description
Misskey is an open source, decentralized social media platform. Misskey's missing signature validation allows arbitrary users to impersonate any remote user. This issue has been patched in version 2023.11.1-beta.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Misskey 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Misskey是一套微型博客平台。 Misskey 2023.11.0及之前版本存在数据伪造问题漏洞，该漏洞源于缺少签名验证，允许任意用户冒充任何远程用户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
misskey-dev misskey < 2023.11.1-beta.1 -

II. Public POCs for CVE-2023-49079

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 11268 chars
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III. Intelligence Information for CVE-2023-49079

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Vendor Advisories for CVE-2023-49079 (1)

IV. Related Vulnerabilities

Same product: misskey
Same vendor: misskey-dev
Same weakness: CWE-347

V. Comments for CVE-2023-49079

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