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Missing authorization in Contact Form by Supsystic WordPress plugin

Priority LOW 29CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

The Contact Form by Supsystic WordPress plugin versions through 1.10.7 are affected. A missing authorization check (CWE-862) lets requests run without the access control the plugin requires. A remote attacker without privileges or user interaction can cause a low integrity impact.

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

Description from the CNA

Missing Authorization vulnerability in Supsystic Contact Form by Supsystic contact-form-by-supsystic allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Contact Form by Supsystic: from n/a through 1.10.7.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00229 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SupsysticContact Form by Supsysticup to 1.10.7—No fix listedCNA
  • Contact Form by Supsystic VendorSupsystic Affected up to 1.10.7 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Contact Form by Supsystic.

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

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-115595
  2. 2026-10-26 CISA SSVC decision points changed
  3. 2026-10-27 Alias added: GHSA-qhxh-2pc2-5gh9

References

  • TI-2023-02984 Supsystic Popup < 1.10.19 - Prototype Pollution CVSS 3.1CRITICAL 9.8
  • TI-2023-28011 WordPress Popup by Supsystic plugin <= 1.10.19 - Broken Access Control vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-03704 Contact Form by Supsystic <= 1.7.36 - Unauthenticated Server-Side Template Injection via Prefill Functionality CVSS 3.1CRITICAL 9.8
  • TI-2020-19380 WordPress Plugin Supsystic Digital Publications 1.6.9 Path Traversal XSS CVSS 4.0HIGH 8.7
  • TI-2020-19379 WordPress Plugin Supsystic Membership 1.4.7 SQL Injection via sidx CVSS 4.0HIGH 8.8
  • TI-2020-19378 WordPress Plugin Supsystic Pricing Table 1.8.7 SQL Injection XSS CVSS 4.0HIGH 8.8
See all 87 →

Sources