CVE-2026-65439: Unauthenticated Cross Site Scripting (XSS) in Ultimate Addons for Contact Form 7 <=3.5.45 versions.

Details

Source

NVD Recent CVEs (US · database · site)

Severity

high — CVSS 7.1

Published

2026-07-27

Last updated

2026-07-28

Exploitation

Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-65439

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-654390.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.

Referenced CVEs

Recent advisories for Unauthenticated Cross Site

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• criticalCVE-2026-66421: OpenClaw Dashboard contains a stored cross-site scripting vulnerability that allows unauthenti…nvd · 2026-07-30
• highCVE-2026-66420: MeshCentral 1.1.21 contains a cross-site WebSocket hijacking protection bypass vulnerability t…nvd · 2026-07-30
• criticalCVE-2026-66418: OpenClaw Dashboard v3.0.0 contains a stored cross-site scripting vulnerability that allows una…nvd · 2026-07-30
• highCVE-2026-66416: Leantime 3.6.2 contains a cross-site request forgery vulnerability that allows unauthenticated…nvd · 2026-07-30
• mediumCVE-2026-65448: Unauthenticated Cross Site Scripting (XSS) in Anti Spam and list cleaner – AcyChecker <= 1.8.1…nvd · 2026-07-27
• highCVE-2026-65447: Unauthenticated Cross Site Scripting (XSS) in Contest Gallery <= 30.0.6 versions.nvd · 2026-07-27

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