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TI-2026-76004 Aliases CVE-2026-104246GHSA-9vjv-8c2x-cq8c

Path traversal in Contact Form 7 Signature Addon allows arbitrary file read

Priority LOW 26CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

The Contact Form 7 Signature Addon WordPress plugin through 4.2.2 does not sanitize a signature field value before building an email attachment path from it. An unauthenticated attacker can use path traversal to attach arbitrary files bounded to wp-content to a form's outgoing email (CWE-22). When a form emails a copy to a submitter-controlled address, the attacker can read the targeted file.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The Contact Form 7 Signature Addon WordPress plugin through 4.2.2 does not sanitize a signature field value before building an email attachment path from it, allowing unauthenticated users to attach arbitrary files (bounded to wp-content on current Contact Form 7) to a form's outgoing email via path traversal; when a form is configured to email a copy to a submitter-controlled address, the attacker can read the targeted file.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0028 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownContact Form 7 Signature Addonup to 4.2.2—No fix listedCNA
  • Contact Form 7 Signature Addon VendorUnknown Affected up to 4.2.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Contact Form 7 Signature Addon.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-104246
  2. 2026-10-18 Alias added: GHSA-9vjv-8c2x-cq8c

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences