CVE-2026-75528: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-qpv7-fm86-f6w8
CVSS 7.2
CWE-79
Published
Advisory Summary

CVE-2026-75528 is a HIGH (CVSS 7.2) security vulnerability vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-75528 at a Glance

CVE Identifier CVE-2026-75528
GHSA Identifier GHSA-qpv7-fm86-f6w8
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.2

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:C/C:L/I:L/A:N).

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

How to Fix CVE-2026-75528

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-2026-75528, 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. 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 Broken Link Checker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Author URL / Link Log in all versions up to, and including, 2.4.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires an administrator to perform the plugin's standard dismiss-and-recheck workflow on a link submitted by the attacker via the WordPress comment author URL field, after which the attacker's HTTP server issues a redirect to a URL containing an HTML/JavaScript payload that is stored verbatim in the link log.

References

NVD — CVE-2026-75528 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75528
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/includes/admin/table-printer.php#L658
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/includes/links.php#L485
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/checkers/http.php#L291
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/checkers/http.php#L432
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/containers/comment.php#L228
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/includes/admin/table-printer.php#L658
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/includes/links.php#L485
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/checkers/http.php#L291
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/checkers/http.php#L432
plugins.trac.wordpress.org/browser/broken-link... WEB
https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/containers/comment.php#L228
plugins.trac.wordpress.org/changeset WEB
https://plugins.trac.wordpress.org/changeset?old_path=%2Fbroken-link-checker/tags/2.4.13&new_path=%2Fbroken-link-checker/tags/2.4.13.1
plugins.trac.wordpress.org/changeset WEB
https://plugins.trac.wordpress.org/changeset?reponame=&new=3662785%40broken-link-checker%2Ftags%2F2.4.13.1&old=3644192%40broken-link-checker%2Ftags%2F2.4.13
www.wordfence.com/threat-intel/vulner... WEB
https://www.wordfence.com/threat-intel/vulnerabilities/id/ec96308f-3944-48c5-94be-b1555c0830b7?source=cve

Frequently Asked Questions

What is CVE-2026-75528?
CVE-2026-75528 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-75528?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-75528?
CVE-2026-75528 has a CVSS v3.1 base score of 7.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2026-75528?
CVE-2026-75528 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Maven dependencies for CVE-2026-75528?
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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qpv7-fm86-f6w8",
  "modified" : "2026-09-02T09:31:30Z",
  "published" : "2026-09-02T09:31:30Z",
  "aliases" : [ "CVE-2026-75528" ],
  "details" : "The Broken Link Checker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Author URL / Link Log in all versions up to, and including, 2.4.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires an administrator to perform the plugin's standard dismiss-and-recheck workflow on a link submitted by the attacker via the WordPress comment author URL field, after which the attacker's HTTP server issues a redirect to a URL containing an HTML/JavaScript payload that is stored verbatim in the link log.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-75528"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/includes/admin/table-printer.php#L658"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/includes/links.php#L485"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/checkers/http.php#L291"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/checkers/http.php#L432"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.13/legacy/modules/containers/comment.php#L228"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/includes/admin/table-printer.php#L658"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/includes/links.php#L485"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/checkers/http.php#L291"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/checkers/http.php#L432"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/broken-link-checker/tags/2.4.8/legacy/modules/containers/comment.php#L228"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/changeset?old_path=%2Fbroken-link-checker/tags/2.4.13&new_path=%2Fbroken-link-checker/tags/2.4.13.1"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/changeset?reponame=&new=3662785%40broken-link-checker%2Ftags%2F2.4.13.1&old=3644192%40broken-link-checker%2Ftags%2F2.4.13"
  }, {
    "type" : "WEB",
    "url" : "https://www.wordfence.com/threat-intel/vulnerabilities/id/ec96308f-3944-48c5-94be-b1555c0830b7?source=cve"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-02T08:16:45Z"
  }
}