Vulnerability-Lookup

CVE-2026-115303 (GCVE-0-2026-115303)

Vulnerability from cvelistv5 – Published: 2026-10-29 08:03 – Updated: 2026-10-29 10:45

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

3.7 (Low)


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

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

WPScan CNA under the mitre root

CNA scorecard E 44/100 over 1922 records in the last 180 days details

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

Credits

Emirhan Sevmez WPScan

Show details on NVD website

JSON

To clipboard

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GHSA-GHMM-GQR3-XWC7

Vulnerability from github – Published: 2026-10-29 09:31 – Updated: 2026-10-29 09:31

Details

Severity

3.7 (Low)


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

Show details on source website

JSON

To clipboard

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    "CVE-2026-115303"
  ],
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    "github_reviewed": false,
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  },
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  "id": "GHSA-ghmm-gqr3-xwc7",
  "modified": "2026-10-29T09:31:29Z",
  "published": "2026-10-29T09:31:29Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115303"
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      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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