TI-2026-73766 Aliases CVE-2026-86799 GHSA-mj4w-fwv4-27g5

Stored cross-site scripting in Forms WordPress plugin

MEDIUM 40CWE-79Published 2026-10-14 · Updated 2026-10-14

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: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The Forms WordPress plugin before 3.0.2 does not sanitise submitted form values on storage or escape them on the form submissions screen in the administration dashboard (CWE-79). An unauthenticated user can submit crafted values that run arbitrary web scripts in the browser of any administrator who views the submissions.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The Forms WordPress plugin before 3.0.2 does not sanitise submitted form values on storage, nor escape them before outputting them on the form submissions screen in the administration dashboard, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of any administrator viewing the submissions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00375 31st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix Fixed Forms (Unknown): 3.0.2

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	Forms	before 3.0.2	3.0.2	Patch available	CNA

Forms VendorUnknown Affected before 3.0.2 Fixed in 3.0.2 Patch available CNA

Remediation

Update the Forms WordPress plugin to version 3.0.2 or later, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fix · CNA Forms (Unknown) Fixed in 3.0.2

Timeline

2026-10-14 Threatist record created from CVE-2026-86799
2026-10-14 Alias added: GHSA-mj4w-fwv4-27g5
2026-10-14 CVSS score added · CISA ADP
2026-10-14 Weakness changed · CISA ADP
2026-10-14 CISA SSVC decision points changed
2026-10-16 Priority changed: LOW → MEDIUM

References

Exploit 1

https://wpscan.com/vulnerability/75bdda94-06b3-4747-bcd2-903167ac1c00/

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences