What is CVE-2021-39195?

CVE-2021-39195 is a high-severity vulnerability in Misskey, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.7/10. Published 2021-09-07.

How severe is CVE-2021-39195?

High severity. CVSS v3 base score is 7.7 out of 10.

SSRF in Misskey

CVE-2021-39195

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…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.011 (60.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Misskey
Misskey-dev Misskey — versions < 12.90.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2021-39195?: CVE-2021-39195 is a high-severity vulnerability in Misskey, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.7/10. Published 2021-09-07.
How severe is CVE-2021-39195?: High severity. CVSS v3 base score is 7.7 out of 10.