CVE-2023-52077
CWE-863Published: December 27, 2023· Updated: Jun 17, 2026
Official Description
Nexkey is a lightweight fork of Misskey v12 optimized for small to medium size servers. Prior to 12.23Q4.5, Nexkey allows external apps using tokens issued by administrators and moderators to call admin APIs. This allows malicious third-party apps to perform operations such as updating server settings, as well as compromise object storage and email server credentials. This issue has been patched in 12.23Q4.5.
Risk Analysis
Nexkey versions prior to 12.23Q4.5 allow third-party apps to misuse administrator tokens to perform sensitive operations like updating server settings. This critical vulnerability is rated 9.8 on the CVSS scale.
There is no public exploit known for this vulnerability, and it is not in the CISA KEV catalog. It is remotely exploitable.
Users must upgrade to Nexkey version 12.23Q4.5 or later to resolve this issue.
Technical Analysis
CVE-2023-52077 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (8)
Quick Facts
Related CVEs (CWE-863)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-52077 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts