CVE-2026-115303 — LOW (3.7)

Vulnerability 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.

CVSS Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-93

References

https://wpscan.com/vulnerability/c32e3ccd-84cb-42a4-a343-353a02ccb541/

FAQ

What is CVE-2026-115303?

CVE-2026-115303 is a vulnerability with a CVSS score of 3.7 (LOW). 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 ...

How severe is CVE-2026-115303?

CVE-2026-115303 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-115303?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.