Critical-Severity Missing Authentication Flaw in l429609201 misaka_danmu_server Tracked as CVE-2026-111643
A newly published critical vulnerability in l429609201 misaka_danmu_server carries a CVSS score of 9.3. Here is what is affected and how to respond.
Key points
- CVE-2026-111643 affects l429609201 misaka_danmu_server.
- CVSS 9.3 (Critical).
- No exploitation confirmed yet.
A critical missing authentication tracked as CVE-2026-111643 has been published in the National Vulnerability Database for l429609201 misaka_danmu_server, with a CVSS base score of 9.3.
At a glance
- CVE
- CVE-2026-111643
- Product
- l429609201 misaka_danmu_server
- CVSS
- 9.3 Critical
- Weakness
- missing authentication
- Exploited
- No known exploitation
What is the vulnerability?
The NVD entry states: Misaka Danmu Server through 2.8.9 contains an authentication bypass vulnerability that allows unauthenticated attackers to write arbitrary configuration keys via the unprotected POST /api/ui/config-history/rollback endpoint. Attackers can set the ipWhitelist key to their own /32 address, or alter trustedProxies and webhookApiKey, to access every protected endpoint as the administrator.
Affected versions
| Vendor | Product | Versions |
|---|---|---|
| L429609201 | misaka_danmu_server | up to 2.8.9 |
Is it being exploited?
There is no public confirmation of exploitation at the time of publication. It does not appear in CISA's Known Exploited Vulnerabilities catalog. We will update this report if that changes.
What should you do?
- Identify whether the affected product and versions run in your environment.
- Apply the vendor update listed in the advisory as soon as it is available.
- Limit network exposure of the affected service until it is patched.
- Monitor the vendor advisory for updated guidance or exploitation reports.
What to do and how to stay safe: CVE-2026-111643
- Vulnerability severity scores ignore your specific architecture and context.
- Exploitability depends on network exposure and user behavior, not just code flaws.
- Prioritization requires continuous asset inventory and threat intelligence alignment.
Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.
Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is CVE-2026-111643?
CVE-2026-111643 is a missing authentication vulnerability in l429609201 misaka_danmu_server.
How severe is CVE-2026-111643?
It has a CVSS score of 9.3 Critical.
Is CVE-2026-111643 being exploited?
There is no public confirmation of exploitation at the time of publication.
