CVE-2026-96763 kvcache-ai mooncake MountSegment Request Processing segment.cpp access control
Remote attackers can bypass access controls in the MountSegment function to perform unauthorized segment operations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-96763?
CVE-2026-96763 is a medium-severity missing authorization vulnerability in kvcache-ai mooncake, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A security flaw has been discovered in kvcache-ai mooncake up to 0.3.12/0.3.13.post1/0.3.14-rc1. This issue affects the function ScopedSegmentAccess::MountSegment of the file segment.cpp of the component MountSegment Request Processing. Performing a manipulation results in improper access controls. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-96763?
How do I fix CVE-2026-96763?
No fix has been published for CVE-2026-96763 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-96763 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-96763 exists.
Sources
Also known as GHSA-c29f-6gh6-wwv9.