9.8

CVE-2026-16230: strategy11 formidable digital signatures Relative Path Traversal

CVSS: 9.8v3.1CriticalDeferred
Published 11-08-2026Last modified 11-08-2026
Open JSON

Vulnerability summary

CVE-2026-16230 is a critical (CVSS 9.8) Relative Path Traversal vulnerability in strategy11 formidable digital signatures. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51.5% of scored vulnerabilities. Fixed in 3.1.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.67%
0%100%
Low · +0.18 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-08-2026
    PublishedVulnerability first disclosed.
  2. 11-08-2026
    Last modifiedVulnerability information updated.

Description

The Formidable Digital Signatures plugin for WordPress is vulnerable to file deletion due to insufficient file path validation in the delete_file function in all versions up to, and including, 3.0.6. This makes it possible for unauthenticated attackers to delete files on the server by supplying an attacker-controlled filename in the item_meta[field_id][content] parameter alongside the delete_saved_image flag during the standard entry-creation POST flow on any form that accepts anonymous submissions.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.67%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

+0.18 pp

From 0.50% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Strategy111 product
Wordpress1 product
  • formidable-signature≤ 3.0.6 (fixed in 3.1)

2 vendors · 2 products

References

4 links