CVE-2026-3066

HummerRisk Cloud Compliance Scanning PlatformUtils.java fixedCommand command injection

Public exploit available. Not confirmed exploited in the wild yet. Only a workaround so far.

CVSS 3.16.3Medium EPSS percentile95th9.6% chance in 30 days CISA KEVNot listedNo confirmed exploitation
Public exploit: 1 source FixWorkaroundNo fixed build yet

Published 2026-02-24Updated 2026-04-29Sources: CVE.org, NVD

NVD CVE.org

What to do

No fixed build is published yet. The vendor describes a workaround.

n/a HummerRiskAffected: 1.0Upgrade to: not statedAffected: 1.1Upgrade to: not statedAffected: 1.2Upgrade to: not statedAffected: 1.3Upgrade to: not stated + 2 more branchesStated by: CVE record
HummerriskAffected: ≤ 1.5.0Upgrade to: after 1.5.0Stated by: NVD

Versions as the sources state them. Full version matrix after sign-in

Steps

Written by AI from the record

Check your HummerRisk deployment version and confirm whether you are running a version up to 1.5.0 (the vulnerable range reported here).
Identify which Cloud Compliance Scanning endpoint/feature maps to PlatformUtils.java’s fixedCommand usage, and whether it is reachable from the internet.
If any part of the vulnerable feature is externally reachable, block it at your network perimeter (allowlist only trusted admin IPs/VPN) and ensure it is not exposed publicly.
Temporarily reduce risk by enforcing least-privilege for the service account running HummerRisk (limit OS permissions so injected commands cannot do much).
Monitor the application and server logs for signs of unexpected command execution attempts or unusual outbound connections, and review any error messages tied to PlatformUtils.java / command execution failures.
Ask your HummerRisk vendor/IT team for an official fixed version for CVE-2026-3066 (none is available in the information provided here), and plan an upgrade/downtime window once a fix is published.

May need vendor or contractor work

Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

A flaw has been found in HummerRisk up to 1.5.0. This vulnerability affects the function fixedCommand of the file hummer-common/hummer-common-core/src/main/java/com/hummer/common/core/utils/PlatformUtils.java of the component Cloud Compliance Scanning. Executing a manipulation can lead to command injection. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

In plain language

Written by AI from the record

CVE-2026-3066 is a command-injection bug in HummerRisk’s Cloud Compliance Scanning that could let an attacker run system commands remotely if they can reach the vulnerable feature; there’s no confirmed patch yet, so you should act now to limit exposure.

HummerRisk (Cloud Compliance Scanning) has a command injection weakness in PlatformUtils.java’s fixedCommand function (CWE-74/CWE-77), where crafted input can be manipulated to trigger command execution remotely; proof-of-concept code is publicly available and no fixed version was identified.

If you're affected

Remote command execution risk
Potential service disruption
Possible data theft risk
Compromise of scanning results

What is it

This bug is like a “message box” in your HummerRisk software that is supposed to take plain instructions—however, a clever attacker could try to smuggle in extra instructions that the system might treat like real commands. If someone can reach the vulnerable part of the software, they could potentially make the server run unintended commands, which can lead to deeper compromise or disruption. The fact that a proof-of-concept exists means this is not just a theoretical issue.

Who is affected

This matters if you run HummerRisk’s Cloud Compliance Scanning feature and your version is up to 1.5.0. It’s a remote issue in the reported vulnerability, so exposure depends heavily on whether the vulnerable functionality is reachable from outside your network. It is only a practical risk if an attacker can access the relevant feature over the network (for example, via internet access to the service).

How urgent is it

Treat this as urgent because an attacker can run remote command attempts against the vulnerable fixedCommand logic, and a public proof-of-concept is available. Even though it’s not listed in the CISA KEV set, the lack of a known patch means you should prioritize containment (reduce external reachability) while you work to upgrade once a fix is released.

What to do — in detail

Confirm exposure

Check installed version: Determine the exact HummerRisk version in your environment. The reported vulnerable scope here is up to 1.5.0.
Locate the affected component path: Verify that Cloud Compliance Scanning is installed/enabled, and map which service/endpoint triggers the code path for hummer-common-core/.../PlatformUtils.java → fixedCommand.
Check reachability: Determine whether the relevant service/endpoint is reachable from the internet or only from internal networks (VPN/admin network).

Immediate containment (if externally reachable)

Block public access: Remove public exposure of HummerRisk’s Cloud Compliance Scanning endpoints. Prefer allowlisting only your admin/VPN IP ranges.
Restrict outbound/inbound traffic: Use firewall rules to limit inbound connections to required ports and limit outbound access from the HummerRisk server to only what’s necessary.

Reduce blast radius

Least privilege: Ensure the operating system account/container running HummerRisk has minimal permissions (no broad write/execute rights on the host, limited access to sensitive files).

Detection and monitoring

Review logs: Look for errors or unusual events around command execution—such as repeated failures tied to command handling, suspicious parameters, or unexpected process-spawn-like behavior (whatever your OS/application logging exposes).
Watch network egress: If you have network monitoring, alert on unexpected outbound connections from the HummerRisk server, especially to domains/IPs not normally used.

Upgrade / fix plan

Request vendor guidance: The provided findings state no fix/patch information is available at this time. Contact your HummerRisk vendor/IT partner for the official fixed version for CVE-2026-3066.
Patch when available: Once a fixed release is published, upgrade promptly (plan for a controlled maintenance window and validate Cloud Compliance Scanning still functions).

Temporary workaround (while waiting for a fix)

Disable/limit the risky feature if possible: If your workflow allows it, disable external access to Cloud Compliance Scanning or route it only through a trusted internal network where attackers cannot reach it.

Technical context

CVE-2026-3066 is a command injection issue (CWE-74: Improper Neutralization of Special Elements used in an OS Command; CWE-77: Improper Neutralization of Special Elements used in Command). In the reported code path, HummerRisk’s Cloud Compliance Scanning uses PlatformUtils.java’s fixedCommand function, where manipulation of input can lead to execution of unintended OS commands. The vulnerability is reported as remotely executable, and a public proof-of-concept exists (weaponized PoC on GitHub). No KEV entry was provided, so exploitation-as-confirmed-by-CISA is not evidenced in the supplied findings. No fixed version/patch details are available here, so mitigation must focus on containment (prevent internet reachability) and least-privilege operation until an official update is released.

This is a general assessment based on public vulnerability data. It does not account for your specific infrastructure — when in doubt, consult a security specialist.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS95th

Public exploit

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in

EPSS

9.6% chance of exploitation activity in the next 30 days, which ranks it in the 95th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

12 events over 218 days, from the signal feeds we watch.

2026-09-30EPSS band changemoderate → low
2026-09-24EPSS band changemoderate → lowepss band change
2026-07-06EPSS band changelow → moderate
2026-07-01EPSS band change0 → moderateepss band change
2026-04-29Workaround availablerecord updated
2026-03-07Public exploit / PoCsource: github-poc

Affected products

hummerriskcommercial
- hummerriskOn-premEnterprise Software / itsm-monitoring

And 1 more affected product. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Scored 6.3 by NVD.

How it is reached

Attack Vector NetworkExploitable remotely over the network without any special conditions
Attack Complexity LowNo special conditions — the attack can be reliably reproduced
Privileges Required LowRequires basic user-level privileges
User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

Confidentiality LowSome restricted information is disclosed, but limited in scope
Integrity LowData modification is possible but limited in scope or consequence
Availability LowReduced performance or intermittent disruption of service