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CVE-2026-115303low3.7

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

Impact

Contact Form by Supsystic plugin versions before 1.11.1 may allow unauthenticated users to inject email headers. The weakness is due to improper neutralization of CRLF sequences. This can lead to arbitrary email header injection.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Unknown · WPScan

Contact Form by Supsystic

1 range
WPScan version evidence

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affected

0 → before 1.11.1

semver versions

unaffected

unknown

Other versions: unaffected

Original source 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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-115303

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-93 ↗

CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')

CISA-ADP

Related →
Contributing organizations · 2
WPScan

Assigning organization

2026-10-29
CISA-ADP

Additional data publisher

2026-10-29

What changed

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References

1 sources
wpscan.com/vulnerability/c32e3ccd-84cb-42a4-a343-353a02ccb541/
exploitWPScan