High · CVSS 8.0CVE-2026-85574

Unbounce Landing Pages 1.1.1 - 1.1.4 - Subscriber+ Reverse-Proxy Target Hijack via set_unbounce_domainsCVE-2026-85574

Answer in brief

CVE-2026-85574 records a High severity (CVSS 8.0) vulnerability in Unbounce Landing Pages 1.1.1 - 1.1.4 - Subscriber+ Reverse-Proxy Target Hijack via set_unbounce_domains. The current sources do not mark it as known exploited. The current feed maps Unknown/Unbounce Landing Pages (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 21, 2026Source checked Nov 3, 2026First seen by HOL Sep 19, 2026Material review Sep 21, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.0
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.0. 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/Unbounce Landing Pages (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Unbounce Landing Pagesgeneric	>=1.1.1 <1.1.5	1.1.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Unbounce Landing Pages.
Review the reported fix. Update Unknown/Unbounce Landing Pages to 1.1.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 21, 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 Unbounce Landing Pages WordPress plugin before 1.1.5 does not perform any authorisation check when updating the configuration its front-end proxy relies on, allowing any authenticated user, such as a subscriber, to point that proxy at a host they control and have arbitrary content served from the site's own origin.

Quoted source text, attributed separately from HOL analysis.