CVE-2021-39195
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.
References
CvssV3 impact
Version | 3.1 |
VectorString | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
AttackVector | NETWORK |
AttackComplexity | LOW |
PrivilegesRequired | LOW |
UserInteraction | NONE |
Scope | UNCHANGED |
ConfidentialityImpact | HIGH |
IntegrityImpact | NONE |
AvailabilityImpact | NONE |
BaseScore | 6.5 |
BaseSeverity | MEDIUM |
CvssV2 impact
AccessComplexity | LOW |
ConfidentialityImpact | PARTIAL |
AvailabilityImpact | NONE |
IntegrityImpact | NONE |
BaseScore | 4 |
VectorString | AV:N/AC:L/Au:S/C:P/I:N/A:N |
Version | 2.0 |
AccessVector | NETWORK |
Authentication | SINGLE |