Resource exhaustion in Rightnow-Ai Openfang
CVE-2026-84888
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (39.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Rightnow-Ai Openfang — versions 0.6.0, 0.6.1, 0.6.2
Weakness classification (CWE)
References
- github.com/outlookgp/CVE/tree/main/OpenFang_ShellExec_Output_Buffer_DoS_Report (exploit)
- vuldb.com/cve/CVE-2026-84888 (third-party-advisory)
- vuldb.com/submit/886466 (third-party-advisory)
- vuldb.com/vuln/398138 (technical-description, vdb-entry)
- vuldb.com/vuln/398138/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-84888?
- CVE-2026-84888 is a medium-severity vulnerability in Rightnow-Ai Openfang, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2026-09-03.
- How severe is CVE-2026-84888?
- Medium severity. CVSS v3 base score is 4.3 out of 10.