CVE-2026-84888 RightNow-AI OpenFang tool_runner.rs shell_exec memory allocation
Remote attackers can cause denial of service via uncontrolled memory allocation in the shell_exec function of the OpenFang runtime library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84888?
CVE-2026-84888 is a medium-severity denial of service vulnerability in RightNow-AI OpenFang, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A weakness has been identified in RightNow-AI OpenFang up to 0.6.9. This vulnerability affects the function shell_exec of the file crates/openfang-runtime/src/tool_runner.rs. This manipulation causes uncontrolled memory allocation. The attack is possible to be carried out remotely. The exploit has been made available to the public and could 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-2026-84888?
How do I fix CVE-2026-84888?
No fix has been published for CVE-2026-84888 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-84888 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84888 exists.
Sources
Also known as GHSA-699f-5qvf-vjwg.