CVE-2023-43805: Nexkey allows users to bypass authentication of Bull dashboard

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-04 · updated 2026-06-17
Weakness: CWE-287

Description

Nexkey is a fork of Misskey, an open source, decentralized social media platform. Prior to version 12.121.9, incomplete URL validation can allow users to bypass authentication for access to the job queue dashboard. Version 12.121.9 contains a fix for this issue. As a workaround, it may be possible to avoid this by blocking access using tools such as Cloudflare's WAF.

Affected products

nexryai nexkey: before 12.121.9 — fixed in 12.121.9

How to fix

Upgrade to a fixed version: nexryai nexkey 12.121.9. Check the vendor advisory for mitigations.

References

https://github.com/misskey-dev/misskey/security/advisories/GHSA-9fj2-gjcf-cqqc
https://github.com/nexryai/nexkey/commit/d89575c521fd4492f5e2ba5a221c5e8f1382081d
https://github.com/nexryai/nexkey/security/advisories/GHSA-g8w5-568f-ffwf
https://github.com/misskey-dev/misskey/security/advisories/GHSA-9fj2-gjcf-cqqc
https://github.com/nexryai/nexkey/commit/d89575c521fd4492f5e2ba5a221c5e8f1382081d
https://github.com/nexryai/nexkey/security/advisories/GHSA-g8w5-568f-ffwf

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