CVE-2026-15983

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-10-01. A secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.1Exploit: 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 File/Directory Deletion in all versions up to, and including, 6.3.316. This is due to the super_save_form AJAX handler performing no capability check — allowing Subscriber-level authenticated users to create or modify Super Forms and enable the file_upload_submission_delete setting — combined with the super_submit_form handler's submit_form function passing the attacker-controlled files[].subdir value from $_POST['data'] directly into SUPER_Common::delete_dir() without sanitization, and a trivially bypassed ABSPATH guard that a subdir value of wp-config.php defeats because dirname(realpath(ABSPATH . $subdir)) resolves to the WordPress root while the naive ABSPATH !== $dir string check fails to match due to a trailing-slash mismatch. This makes it possible for authenticated attackers, with Subscriber-level access and above, to recursively delete arbitrary files and directories on the server, up to and including the entire WordPress installation, resulting in full site takedown and potential remote code execution if critical files such as wp-config.php are removed and the site is subsequently re-installed by another party.

CVSS v3
8.1
EG Score
8.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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 1, 2026

Last Modified

October 3, 2026

Advisory Details (1)

Auto-updated Oct 1, 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-2026-15983(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 15× in last 7d / 15× 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. 2026-10-04 05:27 UTCGHSA enrichment
  2. 2026-10-03 16:23 UTCEG score recompute
  3. 2026-10-03 16:23 UTCGHSA enrichment
  4. 2026-10-03 16:11 UTCEG score recompute
  5. 2026-10-03 16:11 UTCGHSA enrichment
  6. 2026-10-03 14:25 UTCEPSS rescore
  7. 2026-10-03 04:01 UTCEG score recompute
  8. 2026-10-03 04:01 UTCGHSA enrichment
  9. 2026-10-02 14:57 UTCGHSA enrichment
  10. 2026-10-02 01:52 UTCGHSA enrichment
  11. 2026-10-01 12:49 UTCEG score recompute
  12. 2026-10-01 12:49 UTCGHSA enrichment
  13. 2026-10-01 09:23 UTCEG score recompute
  14. 2026-10-01 08:51 UTCEG score recompute
  15. 2026-10-01 08:50 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15983?
CVE-2026-15983 is a high vulnerability published on October 1, 2026. The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Arbitrary File/Directory Deletion in all versions up to, and including, 6.3.316. This is due to the supersaveform AJAX handler performing no capability check — allowing Subscriber-level authenticated users to create or…
When was CVE-2026-15983 disclosed?
CVE-2026-15983 was first published on October 1, 2026, with the most recent update on October 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15983 actively exploited?
CVE-2026-15983 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15983?
CVE-2026-15983 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15983?
A fix for CVE-2026-15983 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-15983 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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