CVE-2026-84888Public exploitNetwork attack vectorHinoki check available

Authenticated service interruption via unbounded command output

Published Sep 2, 2026 · Updated Sep 3, 2026

Uncontrolled memory allocation in RightNow AI OpenFang 0.6.0 through 0.6.9 allows remote authenticated users to interrupt service. The shell_exec function in crates/openfang-runtime/src/tool_runner.rs buffers subprocess output without an effective size bound, so commands producing continuous output grow process memory. Low-privilege access to an agent with shell_exec capability is sufficient to exhaust host memory and degrade or crash the daemon; no confidentiality or integrity impact is reported.

CVSS severityUnavailable
Unscored
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Uncontrolled memory allocation in RightNow AI OpenFang 0.6.0 through 0.6.9 allows remote authenticated users to interrupt service. The shell_exec function in crates/openfang-runtime/src/tool_runner.rs buffers subprocess output without an effective size bound, so commands producing continuous output grow process memory. Low-privilege access to an agent with shell_exec capability is sufficient to exhaust host memory and degrade or crash the daemon; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2026-84888
Published
Sep 2, 2026
Updated
Sep 3, 2026
Vendor
RightNow AI
Product
OpenFang
Classifications
CWE-400, CWE-789, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.6.0
  2. Affected versionversion=0.6.1
  3. Affected versionversion=0.6.2
  4. Affected versionversion=0.6.3
  5. Affected versionversion=0.6.4
  6. Affected versionversion=0.6.5
  7. Affected versionversion=0.6.6
  8. Affected versionversion=0.6.7
  9. Affected versionversion=0.6.8
  10. Affected versionversion=0.6.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RightNow AI · OpenFangversion=0.6.0; version=0.6.1; version=0.6.2; version=0.6.3; version=0.6.4; version=0.6.5; version=0.6.6; version=0.6.7; version=0.6.8; version=0.6.9

Published CVSS scores

4.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
5.3VulDB CNACVSS: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
4.0VulDB CNAAV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR
4.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-789Uncontrolled Memory Allocation
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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