CVE-2026-8688 | Advance Nav Menu Manager <= 1.3 - Missing Authorization to Authenticated (Subscriber+) Nav Menu Item Modification via anmm_save_menu_data AJAX Action

The Advance Nav Menu Manager plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.3. 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 subscriber-level access and above, to duplicate, copy, move, or publish nav_menu_item posts via wp_insert_post(), modifying the site's navigation menus without authorization.

Published: 2026-06-24 Last update: 2026-06-25 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-8688 is rated Low Risk (21.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.23%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-8688

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-24 — 0.23% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-8688

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 [email protected]

Weakness enumeration for CVE-2026-8688

GitHub Security Advisory for CVE-2026-8688

GHSA-239x-hvpx-225m · Severity: medium — The Advance Nav Menu Manager plugin for WordPress is vulnerable to authorization bypass in all...

Affected software / configurations for CVE-2026-8688

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-8688

URL Tags
https://plugins.trac.wordpress.org/browser/advance-nav-menu-manager/tags/1.1/include/class-advancenavmenumanager.php#L231
https://plugins.trac.wordpress.org/browser/advance-nav-menu-manager/tags/1.1/include/class-advancenavmenumanager.php#L236
https://plugins.trac.wordpress.org/browser/advance-nav-menu-manager/tags/1.1/include/option.php#L107
https://plugins.trac.wordpress.org/browser/advance-nav-menu-manager/tags/1.3/include/class-advancenavmenumanager.php#L231
https://plugins.trac.wordpress.org/browser/advance-nav-menu-manager/tags/1.3/include/class-advancenavmenumanager.php#L236
https://plugins.trac.wordpress.org/browser/advance-nav-menu-manager/tags/1.3/include/option.php#L107
https://www.wordfence.com/threat-intel/vulnerabilities/id/e234a79d-5d46-44db-833c-51e202dc49bf?source=cve
cvelogic Threat Intelligence