CVE-2026-85574

HIGHPre-NVD 8.08.0—
EchelonGraph scoreHIGH confidence

Score 8.0 from GitHub Security Advisory (severity: HIGH) published 2026-09-19. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
8.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.0Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.0
EG Score
8.0(high)
EG Risk
36(Track)
EG Risk 36/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity80% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

September 19, 2026

Last Modified

September 21, 2026

Advisory Details (1)

Auto-updated Sep 19, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Unbounce Landing Pages 1.1.1 – 1.1.4 – Subscriber+ Reverse-Proxy Target Hijack via set_unbounce_domains | CVE 2026-85574 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/f13143dc-5674-4e9f-8aa0-8d22df7a7379/

Vendor Advisories for CVE-2026-85574(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 29× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-25 00:13 UTCEG score recompute
  2. 2026-09-25 00:13 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 12:25 UTCGHSA enrichment
  5. 2026-09-24 00:36 UTCEG score recompute
  6. 2026-09-24 00:36 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 12:49 UTCGHSA enrichment
  9. 2026-09-23 01:01 UTCEG score recompute
  10. 2026-09-23 01:01 UTCGHSA enrichment
  11. 2026-09-22 16:01 UTCEPSS rescore
  12. 2026-09-22 13:13 UTCGHSA enrichment
  13. 2026-09-22 01:25 UTCEG score recompute
  14. 2026-09-22 01:25 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 13:38 UTCGHSA enrichment
  17. 2026-09-21 01:50 UTCEG score recompute
  18. 2026-09-21 01:50 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 14:02 UTCGHSA enrichment
  21. 2026-09-20 02:15 UTCEG score recompute
  22. 2026-09-20 02:15 UTCGHSA enrichment
  23. 2026-09-19 14:27 UTCGHSA enrichment
  24. 2026-09-19 13:25 UTCEG score recompute▲ 8.00
  25. 2026-09-19 13:25 UTCGHSA enrichment
Show 4 more
  1. 2026-09-19 13:24 UTCMITRE cvelistV5CVSS v3 → 8 · severity → HIGH
  2. 2026-09-19 07:17 UTCNVD update
  3. 2026-09-19 06:26 UTCEG score recompute
  4. 2026-09-19 06:25 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85574?
CVE-2026-85574 is a high vulnerability published on September 19, 2026. 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…
When was CVE-2026-85574 disclosed?
CVE-2026-85574 was first published in the National Vulnerability Database on September 19, 2026, with the most recent update on September 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85574 actively exploited?
CVE-2026-85574 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 75.1% of all scored CVEs.
What is the CVSS score of CVE-2026-85574?
CVE-2026-85574 has a CVSS v3.1 base score of 8.0 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-85574?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85574, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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