Vulnerability · Published Dec 18, 2024 · Assigned by GitHub_M

CVE-2024-52590Missing validation allows spoofed profiles in Misskey

High 8.8

In plain English

A high-severity improper input validation in misskey from misskey-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 4.0)8.8High

Exploit odds (30 days)0.4%top 71.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Misskey is an open source, federated social media platform. In affected versions missing validation in `ApRequestService.signedGet` allows an attacker to create fake user profiles that appear to be from a different instance than the one where they actually exist. These profiles can be used to impersonate existing users from the target instance. Vulnerable Misskey instances will accept spoofed users as valid, allowing an attacker to impersonate users on another instance. Attackers have full control of the spoofed user and can post, renote, or otherwise interact like a real account. This issue has been addressed in version 2024.11.0-alpha.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products (as reported)

Vendor	Product	Versions
misskey-dev	misskey	>= 2024.8.0-rc.3, < 2024.11.0-alpha.3

Weakness: CWE-20 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:N/SA:L

References

https://github.com/misskey-dev/misskey/security/advisories/GHSA-7vgr-p3vc-p4h2 x_refsource_CONFIRM