CVE-2026-65610: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-2fq9-p2vj-rc2v
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CWE-197
Published
Advisory Summary

CVE-2026-65610 is a LOW security vulnerability vulnerability (CWE-197: Numeric Truncation Error) affecting Software libraries in the Maven ecosystem. The weakness occurs when truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-65610 at a Glance

CVE Identifier CVE-2026-65610
GHSA Identifier GHSA-2fq9-p2vj-rc2v
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-197: Numeric Truncation Error
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-65610

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-2026-65610, 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-197: Numeric Truncation Error, where truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion. 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

nnn stores homelen variable as uchar_t, which can only represent values in the range 0-255. An attacker who can influence the victim's execution environment can provide an arbitrary HOME path with length that is truncated to 0. The expression (homelen - 1) is promoted to signed int and becomes -1 and producing an out-of-bounds read and an out-of-bounds write one byte before the path buffer.  Maintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.

References

NVD — CVE-2026-65610 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-65610
cert.pl/en/posts/2026/08/cv... WEB
https://cert.pl/en/posts/2026/08/CVE-2026-65609

Frequently Asked Questions

What is CVE-2026-65610?
CVE-2026-65610 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-197: Numeric Truncation Error.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-65610?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-65610?
CVE-2026-65610 is classified under CWE-197: Numeric Truncation Error (Truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion.).
How can I check Maven dependencies for CVE-2026-65610?
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-2fq9-p2vj-rc2v",
  "modified" : "2026-08-19T15:32:26Z",
  "published" : "2026-08-19T15:32:26Z",
  "aliases" : [ "CVE-2026-65610" ],
  "details" : "nnn stores homelen variable as uchar_t, which can only represent values in the range 0-255. An attacker who can influence the victim's execution environment can provide an arbitrary HOME path with length that is truncated to 0. The expression (homelen - 1) is promoted to signed int and becomes -1 and producing an out-of-bounds read and an out-of-bounds write one byte before the path buffer. \n\n\n\n\nMaintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-65610"
  }, {
    "type" : "WEB",
    "url" : "https://cert.pl/en/posts/2026/08/CVE-2026-65609"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-197" ],
    "severity" : "LOW",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-19T14:17:38Z"
  }
}