CVE-2026-8976: Software Security Vulnerability Vulnerability

MODERATE

Advisory Identifier: GHSA-x4h7-xv75-wrr5

CVSS 4.3

Published 2026-06-06

Advisory Summary

CVE-2026-8976 is a MODERATE (CVSS 4.3) security vulnerability vulnerability (CWE-862: Missing Authorization) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not perform an authorization check when an actor attempts to access a resource or perform an action.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-8976 at a Glance

CVE Identifier CVE-2026-8976

GHSA Identifier GHSA-x4h7-xv75-wrr5

Severity MODERATE

CVSS v3.1 Base Score 4.3

CWE Classification CWE-862: Missing Authorization

Affected Product Software

Package Ecosystem Maven

Published Date 2026-06-06

Last Updated 2026-06-06

Security Impact

CVSS: 4.3

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

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required Low (PR:L)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality None (C:N)

Integrity Low (I:L)

Availability None (A:N)

How to Fix CVE-2026-8976

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-2026-8976, 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-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. 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 RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.1.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to create and execute RSS import jobs, purge (force-delete) all posts associated with any import job, clear import error logs, and enumerate taxonomy terms and post meta_key names. The nonce required to reach these sub-handlers is leaked to any user with the edit_posts capability via the feedzyjs localized script injected into the block editor, meaning no privileged nonce theft or separate exploit step is required for Contributor-level users.

References

NVD — CVE-2026-8976 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-8976

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L1256

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L1365

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L1400

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L1436

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L3718

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L3891

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L4090

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L4184

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/feedzy-rss-feeds.php#L241

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/gutenberg/feedzy-rss-feeds-gutenberg-block.php#L78

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L1256

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L1365

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L1400

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L1436

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L3718

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L3891

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L4090

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L4184

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/feedzy-rss-feeds.php#L241

plugins.trac.wordpress.org/browser/feedzy-rss-... WEB

https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/gutenberg/feedzy-rss-feeds-gutenberg-block.php#L78

plugins.trac.wordpress.org/changeset WEB

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3552062%40feedzy-rss-feeds&new=3552062%40feedzy-rss-feeds&sfp_email=&sfph_mail=

www.wordfence.com/threat-intel/vulner... WEB

https://www.wordfence.com/threat-intel/vulnerabilities/id/e495c215-2e01-4a37-aca3-99a067c46791?source=cve

Frequently Asked Questions

What is CVE-2026-8976?

CVE-2026-8976 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-862: Missing Authorization.

Which Software versions are affected?

Affected versions include releases prior to current release patches.

What version fixes CVE-2026-8976?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

What is the CVSS score of CVE-2026-8976?

CVE-2026-8976 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

What CWE is associated with CVE-2026-8976?

CVE-2026-8976 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).

How can I check Maven dependencies for CVE-2026-8976?

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-x4h7-xv75-wrr5",
  "modified" : "2026-06-06T00:31:39Z",
  "published" : "2026-06-06T00:31:39Z",
  "aliases" : [ "CVE-2026-8976" ],
  "details" : "The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.1.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to create and execute RSS import jobs, purge (force-delete) all posts associated with any import job, clear import error logs, and enumerate taxonomy terms and post meta_key names. The nonce required to reach these sub-handlers is leaked to any user with the edit_posts capability via the feedzyjs localized script injected into the block editor, meaning no privileged nonce theft or separate exploit step is required for Contributor-level users.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-8976"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L1256"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L1365"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L1400"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L1436"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L3718"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L3891"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L4090"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/admin/feedzy-rss-feeds-import.php#L4184"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/feedzy-rss-feeds.php#L241"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.2/includes/gutenberg/feedzy-rss-feeds-gutenberg-block.php#L78"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L1256"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L1365"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L1400"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L1436"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L3718"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L3891"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L4090"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/admin/feedzy-rss-feeds-import.php#L4184"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/feedzy-rss-feeds.php#L241"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/browser/feedzy-rss-feeds/tags/5.1.5/includes/gutenberg/feedzy-rss-feeds-gutenberg-block.php#L78"
  }, {
    "type" : "WEB",
    "url" : "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3552062%40feedzy-rss-feeds&new=3552062%40feedzy-rss-feeds&sfp_email=&sfph_mail="
  }, {
    "type" : "WEB",
    "url" : "https://www.wordfence.com/threat-intel/vulnerabilities/id/e495c215-2e01-4a37-aca3-99a067c46791?source=cve"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-06T00:16:42Z"
  }
}

CVSS V3

4.3 MODERATE

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required Low (PR:L)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality None (C:N)

Integrity Low (I:L)

Availability None (A:N)

Vector String

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Advisory Metadata

Source ID: GHSA-x4h7-xv75-wrr5
Schema Version: 1.4.0
Published: 2026-06-06 00:31
Last Modified: 2026-06-06 00:31
Database Record File: advisories/unreviewed/2026/06/GHSA-x4h7-xv75-wrr5/GHSA-x4h7-xv75-wrr5.json