CVE-2026-115303 (GCVE-0-2026-115303)
Vulnerability from cvelistv5 – Published: 2026-10-29 08:03 – Updated: 2026-10-29 10:45
VLAI
EPSS
VEX
Title
Contact Form by Supsystic < 1.11.1 - Unauthenticated CRLF / Email Header Injection via Reply-To Field Mapping
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 10:43 UTC
CWE
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/c32e3ccd-84cb-42… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Unknown | Contact Form by Supsystic |
Affected:
0 , < 1.11.1
(semver)
|
guessed |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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