CVE-2021-39195
High
Description
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.
SeverityHigh
CVSS7.7
Exploit probability—
Product
Misskey
PublishedSep 7, 2021
First seenSep 7, 2021
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- misskey misskey12.90.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| misskey misskey | v < 12.90.0 | 12.90.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.