External risk intelligence

ape-volo-admin Authentication Bypass Via Hardcoded JWT Signing Key.

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-120442

The vulnerability affects an administration API platform (ape-volo-admin). Such applications are commonly deployed as internet-facing web APIs or management services, making them reachable in typical network-exposed configurations.

Authentication Bypass

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability has been identified in the ape-volo-admin technology that could allow unauthorized access to administrator functions. This issue stems from a weakness in how administrator tokens are secured, potentially enabling attackers to gain control over user data and permissions without proper authentication. The main concern is confirming relevance and exposure of this technology within our environment.

Bypass of admin login controls.
Attackers gain API control over data.
Confirm if this technology is in use.

Attack Path

How an attacker could exploit the issue

An attacker can gain control by sending specially crafted requests to the application's API. This is possible because the application uses a hardcoded key to sign administrator tokens, allowing an attacker to create their own valid administrator tokens offline. Once an attacker has a forged administrator token, they can bypass authentication and gain full control over the application's API, including managing users, roles, permissions, and data.

No prior access required.
Forging administrator tokens offline.
Full API control and data access.

Live Threat

Current exploitation, exposure, and threat context

Unauthenticated attackers could gain full API control by forging administrator tokens using a hardcoded signing key. This could allow them to manipulate user data, roles, and permissions within the application when supported by the advisory.

API control and sensitive data.
Forged tokens via hardcoded key.
Unauthorized data access and manipulation.

Operational Fix

Recommended remediation, mitigation, and detection steps

Real-world ownership of this critical authentication bypass vulnerability likely falls to the application or platform team responsible for the ape-volo-admin service. The first practical step is to identify all instances of ape-volo-admin within your environment, determine their reachability and criticality, and then confirm the specific owner accountable for each instance to plan appropriate remediation.

Application or platform teams own the issue.
Verify ape-volo-admin instance reachability and criticality.
Plan remediation based on confirmed risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is ape-volo-admin?

ape-volo-admin is a software platform designed for administrative tasks, often utilized as a web API or management service to handle user accounts, roles, permissions, and internal data. It serves as a central control point for system orchestration, which means its security is critical to maintaining the integrity of the information and settings managed within that environment.

What does CVE-2026-120442 mean for system security?

This CVE refers to an authentication bypass vulnerability, classified as CWE-1394 (Use of Hardcoded Cryptographic Key). It means the application uses a fixed, embedded secret to sign administrator tokens. Because this key is known, unauthorized parties can generate valid tokens offline to impersonate administrators, granting them complete control over the application's API and data without ever needing a legitimate password.

How can an attacker trigger this vulnerability?

An attacker can exploit this by crafting their own administrator tokens offline using the hardcoded key found in the application configuration. Once the forged token is created, the attacker sends it to the API to bypass security checks. Simply accessing the API is sufficient; this bug does not require any prior user authentication, specific user interaction, or complex internal knowledge to initiate the bypass.

Is my instance of ape-volo-admin at risk?

Halo Surface Signal indicates that because ape-volo-admin functions as an administration API, it is frequently deployed in internet-facing configurations. This visibility increases the likelihood that your instance is reachable by external actors. You should assume high risk if the service is accessible over public networks, as it lacks the necessary perimeter defenses to prevent these forged token requests from reaching the application logic.

What should I do if I use this software?

First, locate and inventory all deployments of ape-volo-admin within your infrastructure to assess their reachability. Determine which teams are responsible for managing these services, as they must handle the transition to a version beyond 3.6.1. Prioritize these instances based on their network exposure and the sensitivity of the data they manage, then coordinate with the platform owners to apply the necessary updates.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.