CVE-2026-84888CWE-400CWE-789denial-of-service

CVE-2026-84888

Medium · published September 3, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
39.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00471 · 39.7th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-789 · Memory Allocation with Excessive Size Value
Published
2026-09-03T09:16Z
References (5)
https://vuldb.com/vuln/398138 · [email protected]https://vuldb.com/vuln/398138/cti · [email protected]https://vuldb.com/cve/CVE-2026-84888 · [email protected]https://vuldb.com/submit/886466 · [email protected]https://github.com/outlookgp/CVE/tree/main/OpenFang_ShellExec_Output_Buffer_DoS_Report · [email protected]
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 02 SEP 21:15Z
    RightNow-AI OpenFang tool_runner.rs shell_exec memory allocation
    cvelistv5