Vulnerability · Published Sep 2, 2026 · Assigned by VulDB
CVE-2026-84888RightNow-AI OpenFang tool_runner.rs shell_exec memory allocation
Medium 4.3
In plain English
A medium-severity uncontrolled resource consumption in OpenFang from RightNow-AI. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| RightNow-AI | OpenFang | 0.6.00.6.10.6.20.6.30.6.40.6.50.6.60.6.7 |
Weakness: CWE-789, CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
References
- VDB-398138 | RightNow-AI OpenFang tool_runner.rs shell_exec memory allocation vdb-entry, technical-description
- VDB-398138 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-84888 | CVE Analysis and Report third-party-advisory
- Submit #886466 | OpenFang 0.6.9 Denial of Service third-party-advisory
- https://github.com/outlookgp/CVE/tree/main/OpenFang_ShellExec_Output_Buffer_DoS_Report exploit