CVE-2021-39195
In affected versions a Server-Side Request Forgery vulnerability exists in "Upload from URL" and remote attachment handling.
Does this matter?
Lower severity and a low EPSS score (1.06%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.06% probability · 63th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- misskey/misskey
- Source
- security-advisories@github.com
References
- https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904Release Notes, Third Party Advisory
- https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2ePatch, Third Party Advisory
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vfIssue Tracking, Patch, Third Party Advisory
- https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904Release Notes, Third Party Advisory
- https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2ePatch, Third Party Advisory
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vfIssue Tracking, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.