CVE Vulnerability

CVE-2021-39195

Misskey is an open source, decentralized microblogging platform. In affected versions a Server-Side Request Forgery vulnerability exists in "Upload from URL" and remote attachment handling. This could result in the disclosure of non-public information within the internal network. This has been fixed in 12.90.0. However, if you are using a proxy, you will need to take additional measures. As a workaround this exploit may be avoided by appropriately restricting access to private networks from the host where the application is running.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vf Issue Tracking Patch
https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2e Patch Third Party Advisory
https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904 Release Notes Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*
Information

Published : 2021-09-07 07:15

Updated : 2021-09-14 04:20

NVD link : CVE-2021-39195

Mitre link : CVE-2021-39195

Products Affected
No products.
CWE
CWE-918

Server-Side Request Forgery (SSRF)