CVE-2026-84888: RightNow-AI OpenFang tool_runner.rs shell_exec memory allocation

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-03 · updated 2026-09-03
Weakness: CWE-400

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

RightNow-AI OpenFang: 0.6.0, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.6.5 (+4)

References

https://github.com/outlookgp/CVE/tree/main/OpenFang_ShellExec_Output_Buffer_DoS_Report
https://vuldb.com/cve/CVE-2026-84888
https://vuldb.com/submit/886466
https://vuldb.com/vuln/398138
https://vuldb.com/vuln/398138/cti

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