high7.7
CVE-2021-39195
Misskey is an open source, decentralized microblogging platform.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Misskey | Misskey | before 12.90.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904
- https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2e
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vf
- https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904
- https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2e
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vf