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Sensitive data exposure in WordPress Contact Form by Supsystic plugin

Priority LOW 39CWE-201Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-201.

Summary

Contact Form by Supsystic, a WordPress plugin, is affected in versions through 1.10.5. The plugin inserts sensitive information into data it sends (CWE-201). An unauthenticated remote attacker can retrieve the embedded sensitive data without user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Insertion of Sensitive Information Into Sent Data vulnerability in Supsystic Contact Form by Supsystic contact-form-by-supsystic allows Retrieve Embedded Sensitive Data.This issue affects Contact Form by Supsystic: from n/a through 1.10.5.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00335 27th 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 1.10.5—No fix listedCNA
  • Contact Form by Supsystic VendorSupsystic Affected up to 1.10.5 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 · 2026-10-29

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-115591
  2. 2026-10-28 Alias added: GHSA-92cm-w7hh-v85q
  3. 2026-10-29 CISA SSVC decision points changed
  4. 2026-10-29 Priority changed: MEDIUM → LOW

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