CVE-2026-11605: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-qhh7-j7w3-xfxq
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CVSS 7.5
CWE-408
Published
Advisory Summary

CVE-2026-11605 is a HIGH (CVSS 7.5) security vulnerability vulnerability (CWE-408: Incorrect Behavior Order: Early Amplification) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product allows an entity to perform a legitimate but expensive operation before authentication or authorization has taken place.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-11605 at a Glance

CVE Identifier CVE-2026-11605
GHSA Identifier GHSA-qhh7-j7w3-xfxq
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-408: Incorrect Behavior Order: Early Amplification
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-11605

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-2026-11605, 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-408: Incorrect Behavior Order: Early Amplification, where the product allows an entity to perform a legitimate but expensive operation before authentication or authorization has taken place. 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

The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.

References

NVD — CVE-2026-11605 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-11605
downloads.isc.org/isc/bind9/9.20.26 WEB
https://downloads.isc.org/isc/bind9/9.20.26
downloads.isc.org/isc/bind9/9.21.24 WEB
https://downloads.isc.org/isc/bind9/9.21.24
kb.isc.org/docs/cve-2026-11605 WEB
https://kb.isc.org/docs/cve-2026-11605

Frequently Asked Questions

What is CVE-2026-11605?
CVE-2026-11605 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-408: Incorrect Behavior Order: Early Amplification.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-11605?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-11605?
CVE-2026-11605 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-11605?
CVE-2026-11605 is classified under CWE-408: Incorrect Behavior Order: Early Amplification (The product allows an entity to perform a legitimate but expensive operation before authentication or authorization has taken place.).
How can I check Maven dependencies for CVE-2026-11605?
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-qhh7-j7w3-xfxq",
  "modified" : "2026-07-22T15:31:26Z",
  "published" : "2026-07-22T15:31:26Z",
  "aliases" : [ "CVE-2026-11605" ],
  "details" : "The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-11605"
  }, {
    "type" : "WEB",
    "url" : "https://downloads.isc.org/isc/bind9/9.20.26"
  }, {
    "type" : "WEB",
    "url" : "https://downloads.isc.org/isc/bind9/9.21.24"
  }, {
    "type" : "WEB",
    "url" : "https://kb.isc.org/docs/cve-2026-11605"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-408" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-22T15:16:51Z"
  }
}