CVE-2023-49079 Misskey's missing signature validation allows arbitrary users to impersonate any remote user.
Missing signature validation in Misskey allows arbitrary users to impersonate any remote user, leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-49079?
CVE-2023-49079 is a critical authentication bypass vulnerability in misskey-dev misskey, published on 29 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Misskey is an open source, decentralized social media platform. Misskey's missing signature validation allows arbitrary users to impersonate any remote user. This issue has been patched in version 2023.11.1-beta.1.
Weakness: CWE-347
Which versions are affected by CVE-2023-49079?
It affects 1 product.
Products include Misskey Misskey.
How do I fix CVE-2023-49079?
No fix has been published for CVE-2023-49079 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-49079 being exploited?
There is no known exploitation of CVE-2023-49079 in the wild and no public exploit code.
Other vulnerabilities in misskey-dev misskey
- CVE-2025-25306 Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes
- CVE-2026-28431 Misskey lacks proper authorization checks and input validation
- CVE-2023-52139 Misskey vulnerable to improper authorization when accessing with third-party application
- CVE-2024-52590 Missing validation allows spoofed profiles in Misskey
- CVE-2024-52591 Missing validation allows spoofed profiles and notes in Misskey
Sources
Also known as GHSA-3f39-6537-3cgc.