Unauthenticated stored XSS in click5 CRM add-on for Contact Form 7
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The click5 CRM add-on to Contact Form 7 WordPress plugin through 1.0.4 does not sanitise or escape content submitted through an unauthenticated endpoint before outputting it in an admin page (CWE-79). An unauthenticated remote attacker can store script that runs in the browsers of higher-privileged users such as administrators. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The click5 CRM add-on to Contact Form 7 WordPress plugin through 1.0.4 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | click5 CRM add-on to Contact Form 7 | up to 1.0.4 | — | No fix listed | CNA |
- click5 CRM add-on to Contact Form 7 VendorUnknown Affected up to 1.0.4 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for click5 CRM add-on to Contact Form 7.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-11 Threatist record created from CVE-2026-84261
- 2026-10-11 Alias added: GHSA-3w72-95j2-ph87
- 2026-10-12 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-84261 · CVE Program
- CVE-2026-84261 · NVD
- FIRST EPSS
- GHSA-3w72-95j2-ph87 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences