cvedb.io
CVE-2021-39195
HIGH · CVSS 7.7
EPSS exploitation probability: 0%
Published 2021-09-07T19:15:08.600 · Last modified 2026-06-17T04:03:17.353

Summary

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

misskey — misskey

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.