CVE-2026-107785: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-jm3h-x845-c42w
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CWE-252
Published
Advisory Summary

CVE-2026-107785 is a MODERATE security vulnerability vulnerability (CWE-252: Unchecked Return Value) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-107785 at a Glance

CVE Identifier CVE-2026-107785
GHSA Identifier GHSA-jm3h-x845-c42w
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-252: Unchecked Return Value
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-107785

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-107785, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-252: Unchecked Return Value, where the product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Crux Agent from 1.9.0 before 2.0.3 uses the full SKA bilocation key as the WireGuard preshared key. When a peering session negotiates use of SHA-512, the key produced is 64 bytes instead of the 32 bytes WireGuard requires. The agent does not validate this size; instead it attempts to use the `wg set` command to update the live tunnel, and write the invalid key to the WireGuard configuration file. The update fails, so the live tunnel keeps using its previous preshared key until the tunnel is shut down. The tunnel will fail to start when restarted. For a peer which has never successfully negotiated a 32-byte bilocation key in a Crux C2 organization which has the "Enforce SKA Use" setting turned off, no preshared key will be set for the tunnel. Therefore, an attacker who is able to intercept and store the peer's traffic, and has access (or will have access) to a cryptographically relevant quantum computer, will be able to decrypt the tunnel.

References

NVD — CVE-2026-107785 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107785
Software Security Information SECURITY
https://sirius.computer/security-disclosure-policy

Frequently Asked Questions

What is CVE-2026-107785?
CVE-2026-107785 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-252: Unchecked Return Value.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-107785?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-107785?
CVE-2026-107785 is classified under CWE-252: Unchecked Return Value (The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.).
How can I check Maven dependencies for CVE-2026-107785?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jm3h-x845-c42w",
  "modified" : "2026-10-09T15:31:31Z",
  "published" : "2026-10-09T15:31:31Z",
  "aliases" : [ "CVE-2026-107785" ],
  "details" : "Crux Agent from 1.9.0 before 2.0.3 uses the full SKA bilocation key as the WireGuard preshared key. When a peering session negotiates use of SHA-512, the key produced is 64 bytes instead of the 32 bytes WireGuard requires. The agent does not validate this size; instead it attempts to use the `wg set` command to update the live tunnel, and write the invalid key to the WireGuard configuration file. The update fails, so the live tunnel keeps using its previous preshared key until the tunnel is shut down. The tunnel will fail to start when restarted.\n\n\n\nFor a peer which has never successfully negotiated a 32-byte bilocation key in a Crux C2 organization which has the \"Enforce SKA Use\" setting turned off, no preshared key will be set for the tunnel. Therefore, an attacker who is able to intercept and store the peer's traffic, and has access (or will have access) to a cryptographically relevant quantum computer, will be able to decrypt the tunnel.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:A/V:C/RE:L/U:Amber"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-107785"
  }, {
    "type" : "WEB",
    "url" : "https://sirius.computer/security-disclosure-policy"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-252" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-09T14:17:19Z"
  }
}