The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.3 does not sufficiently restrict which PHP functions can be used as a custom field-validation callback, relying on a blocklist that omits a file-deletion function, allowing users able to manage forms to cause arbitrary files on the server to be deleted. The deletion itself is carried out when the form is submitted, which requires no authentication.
CVE-2026-19860
MEDIUMPre-NVD 5.55.5Trending — 4 sources updated this week
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 5.5 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: cisa-adp
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.5
- EG Score
- 5.5(low)
- EG Risk
- 25(Track)EG Risk 25/100SSVC: Track
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 computedSeverity55% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 7%
- KEV
- Not listed
Published
September 19, 2026
Last Modified
September 19, 2026
Advisory Details (1)
Auto-updated Sep 19, 2026🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available
JetFormBuilder 3.5.6.2 – 3.6.5.2 – Admin+ Arbitrary File Deletion via Server-Side Validation Callback | CVE 2026-19860 | Plugin Vulnerabilities
https://wpscan.com/vulnerability/d73d8d27-6dad-4a7f-bf51-f5fc18ebc81f/Vendor Advisories for CVE-2026-19860(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 7× in last 7d / 7× 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.
- 2026-09-19 14:27 UTCGHSA enrichment
- 2026-09-19 13:25 UTCEG score recompute▲ 5.50
- 2026-09-19 13:25 UTCGHSA enrichment
- 2026-09-19 13:24 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
- 2026-09-19 07:17 UTCNVD update
- 2026-09-19 06:26 UTCEG score recompute
- 2026-09-19 06:25 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-19860?
CVE-2026-19860 is a medium vulnerability published on September 19, 2026. The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.3 does not sufficiently restrict which PHP functions can be used as a custom field-validation callback, relying on a blocklist that omits a file-deletion function, allowing users able to manage forms to cause arbitrary…
When was CVE-2026-19860 disclosed?
CVE-2026-19860 was first published in the National Vulnerability Database on September 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19860 actively exploited?
CVE-2026-19860 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 93.3% of all scored CVEs.
What is the CVSS score of CVE-2026-19860?
CVE-2026-19860 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-19860?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19860, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-19860
Is Your Infrastructure Affected by CVE-2026-19860?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.