click5 CRM add-on for Gravity Forms: Stored Cross-Site Scripting
Summary
The click5 CRM add-on for Gravity Forms, a WordPress plugin, up to and including version 1.0.3 does not sanitise or escape content submitted through an unauthenticated endpoint before displaying it on an admin page. An anonymous attacker can store malicious script that runs in the browser of a logged-in administrator who opens the affected page. This could allow session hijacking or takeover of the WordPress site. No fixed version is known.
Affected
- click5 CRM add-on to Gravity Forms (WordPress slug gf-add-on-by-click5), versions 0 to 1.0.3
- Default configuration: Unknown.
Fixed in
Unknown. No fixed version is known; WPScan lists the status as No known fix.
Workaround
- Remove or deactivate the click5 CRM add-on if no fixed version is available.
- Until removal, restrict access to the affected admin screens and review form entries from unknown sources before viewing them in the admin area.
Exploitation
- No known exploitation in the wild.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- Not listed in CISA KEV.
- EPSS about 0.3%.
- Public proof of concept: Unknown.
Our recommendation
- Inventory WordPress sites for the click5 add-on, especially those with Gravity Forms.
- Remove or disable the add-on if it is present and no fixed version exists.
- Check for a newer vendor release, as none was found in this research.
- Monitor the vendor, WPScan and CISA KEV for updates.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- WPScan vulnerability entry CVE-2026-84260 wpscan.com
- OpenCVE CVE-2026-84260 app.opencve.io
- Vulners VulnCheck/CISA data CVE-2026-84260 vulners.com
- Vulners NVD CVE-2026-84260 vulners.com
- Strix CVE-2026-84260 www.strix.ai
- Patchstack advisory via Vulners vulners.com
- FAIR package listing WPForms add-on by click5 fair.pm
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 20:43.
Original description (NVD)
The click5 CRM add-on to Gravity Forms WordPress plugin through 1.0.3 does not sanitise and escape content submitted through an unauthenticated endpoint before outputting it back in an admin page, leading to Stored XSS which could be used against high privilege users such as admin.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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