CVE-2021-39195
7.7 HIGHMisskey is an open source, decentralized microblogging platform
Published: 2021-09-07 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 7.7 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- CWE
- CWE-918
Affected products
| Vendor | Product |
|---|---|
| misskey | misskey |
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-39195
- [Other]https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904
- [Patch]https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2e
- [Patch]https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vf
- [Other]https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904
- [Patch]https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2e
- [Patch]https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vf
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- CVE-2021-39169 — Misskey is a decentralized microblogging platform (8.0 HIGH)
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