Nimble Builder <= 3.3.8 - Subscriber+ Non-Public Content Disclosure via sek_get_nimble_content_for_seo_plugins (CVE-2026-16557) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-16557

Nimble Builder <= 3.3.8 - Subscriber+ Non-Public Content Disclosure via sek_get_nimble_content_for_seo_plugins

Answer in brief

CVE-2026-16557 records a Unknown severity vulnerability in Nimble Builder <= 3.3.8 - Subscriber+ Non-Public Content Disclosure via sek_get_nimble_content_for_seo_plugins. The current sources do not mark it as known exploited. The current feed maps Unknown/Nimble Page Builder (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 19, 2026Updated Sep 19, 2026Source checked Sep 19, 2026First seen by HOL Sep 19, 2026Material review Sep 19, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Nimble Page Builder (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Nimble Page Buildergeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Nimble Page Builder.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 19, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source description

The Nimble Page Builder WordPress plugin through 3.3.8 does not perform an authorization check when returning page-builder content through an authenticated AJAX action, allowing any authenticated user (Subscriber+) to disclose the page-builder content of arbitrary non-public (draft, pending, private, scheduled) posts and pages.

Quoted source text, attributed separately from HOL analysis.