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CVE-2026-115303

Contact Form by Supsystic < 1.11.1 - Unauthenticated CRLF / Email Header Injection via Reply-To Field Mapping

LOW
3.7
CVSS Score
Published: October 29, 2026 at 08:03 AM UTC
Updated: October 29, 2026 at 03:18 PM UTC
1 product affected across 1 vendorContact Form

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Severity
LOW3.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

The Contact Form by Supsystic WordPress plugin before 1.11.1 does not strip CR/LF characters or re-validate submitted field values before concatenating them into outgoing email headers when a form is configured to map a submitted field into its Reply-To, From or Cc header, allowing unauthenticated users to inject arbitrary email headers such as additional Bcc or Cc recipients into the notification email.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Contact Form· Supsysticwordpress-plugin
60%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical Description
Source: cverecord
https://wpscan.com/vulnerability/c32e3ccd-84cb-42a4-a343-353a02ccb541/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.7LOWWPScan
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-93

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