Security readout for executives and security teams
Plain-English summary
An unauthenticated attacker may delete server files through a publicly submitable WordPress form using Formidable Digital Signatures 3.0.6 or earlier. Deleted files could disrupt the website and potentially undermine its integrity or confidentiality. The CVSS score is 9.8, but the supplied sources do not establish active exploitation.
Executive priority
Treat internet-facing affected sites as an immediate remediation priority. Rapidly identify exposed anonymous signature forms, update the plugin, and check file integrity. Escalate incident response if unexplained deletions or suspicious submissions are found.
Technical view
Insufficient path validation in the plugin’s delete_file function allows attacker-controlled filename input during entry creation when delete_saved_image is set. Exploitation requires a form accepting anonymous submissions. The issue is classified as CWE-23 path traversal and affects versions through 3.0.6 according to the narrative record.
Likely exposure
Highest exposure exists on internet-facing WordPress sites running version 3.0.6 or earlier with anonymous forms using signature fields. Sites without the plugin, outside the stated version range, or without anonymous submission paths are not shown to be exploitable by the supplied evidence.
Exploitation context
The reported attack is remote, unauthenticated, low complexity, and requires no user interaction. It can occur through the normal form entry-creation flow. CISA KEV status is false, and the supplied bundle provides no evidence of active exploitation in the wild.
Researcher notes
The narrative, title, and CVSS vector support critical severity. However, the structured affected entry lists version "0" with defaultStatus "unaffected," conflicting with the stated affected range through 3.0.6. Validate version status against vendor and CVE updates. No exploit-in-the-wild evidence is supplied.
Mitigation direction
- Upgrade Formidable Digital Signatures to version 3.1 or a later vendor-supported release.
- Temporarily disable affected signature forms or anonymous submissions until the update is verified.
- Back up critical site files and confirm backups are protected from web-server deletion.
- Review current vendor and Wordfence guidance for additional mitigations or revised affected-version information.
Validation and detection
- Inventory WordPress sites for Formidable Digital Signatures and record installed versions.
- Identify public forms accepting anonymous submissions and determine whether they contain signature fields.
- Confirm affected installations run version 3.1 or a later vendor-supported release.
- Review web, application, and file-integrity logs for suspicious form submissions or unexpected deletions.
- Verify critical WordPress and server files against trusted backups or deployment artifacts.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-23: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-16230 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9WordfenceVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineWordfence
Vendor Notified
- Source timelineWordfence
Disclosed
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c9a5f8ca-7efc-401b-8a93-07fbe7204dce?source=cveCVE reference, Wordfence
- https://formidableforms.com/CVE reference, Wordfence
- https://formidableforms.com/changelog/digital-signature-forms-3-1/CVE reference, Wordfence
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Relative Path Traversal
Relative Path Traversal represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.