CVE-2026-88405 Code injection in n/a
Attackers can execute arbitrary code in Univer via a crafted payload in the remote register function service.
- 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-2026-88405?
CVE-2026-88405 is a critical code injection vulnerability in n/a, published on 21 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A remote code execution (RCE) vulnerability in the RemoteRegisterFunctionService function (/remote/remote-register-function.service.ts) of Univer v1.0.0-alpha.2 allows attackers to execute arbitrary code via a crafted payload.
Weakness: CWE-94
Which versions are affected by CVE-2026-88405?
How do I fix CVE-2026-88405?
No fix has been published for CVE-2026-88405 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-88405 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88405 exists.
Sources
Also known as GHSA-c4rf-xpw9-chfc.