CVE-2026-17609

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-08. A secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 9.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Arbitrary Directory Deletion in all versions up to, and including, 6.3.316 via the submit_form function. This is due to insufficient validation of attacker-controlled JSON field declarations against the actual form schema, combined with a non-effective ABSPATH guard that dirname() trivially bypasses by stripping the trailing slash. This makes it possible for unauthenticated attackers to recursively delete arbitrary directories on the server, including the WordPress root directory. Exploitation requires that an administrator has enabled the 'Delete files from server after form submissions' setting, though this is a documented and commonly-enabled feature.

CVSS v3
9.1
EG Score
9.1CRITICALhigh confidence
EG Risk
56
EG Risk 56/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity91% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 8, 2026

Last Modified

October 10, 2026

Advisory Details (1)

Auto-updated Oct 8, 2026
Patch available. Sources: github_pr.
github_pr Patch Available

fix(security): hardening update

Patch available: RensTillmann/super-forms v6.3.317 (PR #205 merged 2026-09-17)

https://github.com/RensTillmann/super-forms/pull/205

Vendor Advisories for CVE-2026-17609(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 32× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-11 07:13 UTCGHSA enrichment
  2. 2026-10-11 03:15 UTCGHSA enrichment
  3. 2026-10-10 23:15 UTCEG score recompute
  4. 2026-10-10 23:15 UTCGHSA enrichment
  5. 2026-10-10 19:59 UTCEPSS rescore
  6. 2026-10-10 19:16 UTCGHSA enrichment
  7. 2026-10-10 15:17 UTCGHSA enrichment
  8. 2026-10-10 11:18 UTCGHSA enrichment
  9. 2026-10-10 07:19 UTCGHSA enrichment
  10. 2026-10-10 03:21 UTCEG score recompute
  11. 2026-10-10 03:21 UTCGHSA enrichment
  12. 2026-10-10 03:00 UTCEG score recompute
  13. 2026-10-10 03:00 UTCGHSA enrichment
  14. 2026-10-10 01:24 UTCGHSA enrichment
  15. 2026-10-09 21:25 UTCEG score recompute
  16. 2026-10-09 21:25 UTCGHSA enrichment
  17. 2026-10-09 20:06 UTCEPSS rescore
  18. 2026-10-09 17:26 UTCGHSA enrichment
  19. 2026-10-09 13:23 UTCGHSA enrichment
  20. 2026-10-09 09:22 UTCGHSA enrichment
  21. 2026-10-09 05:24 UTCGHSA enrichment
  22. 2026-10-09 01:25 UTCGHSA enrichment
  23. 2026-10-08 21:27 UTCGHSA enrichment
  24. 2026-10-08 17:27 UTCEG score recompute
  25. 2026-10-08 17:27 UTCGHSA enrichment
Show 7 more
  1. 2026-10-08 17:11 UTCEPSS rescore
  2. 2026-10-08 15:12 UTCGHSA enrichment
  3. 2026-10-08 09:18 UTCEG score recompute
  4. 2026-10-08 09:18 UTCGHSA enrichment
  5. 2026-10-08 05:20 UTCEG score recompute
  6. 2026-10-08 04:47 UTCEG score recompute
  7. 2026-10-08 04:46 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-17609?
CVE-2026-17609 is a critical vulnerability published on October 8, 2026. The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Arbitrary Directory Deletion in all versions up to, and including, 6.3.316 via the submit_form function. This is due to insufficient validation of attacker-controlled JSON field declarations against the actual form…
When was CVE-2026-17609 disclosed?
CVE-2026-17609 was first published on October 8, 2026, with the most recent update on October 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17609 actively exploited?
CVE-2026-17609 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-17609?
CVE-2026-17609 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-17609?
A fix for CVE-2026-17609 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-17609 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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