CVE-2026-19860

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 5.5 from GitHub Security Advisory published 2026-09-19. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory

Also known asEUVD-2026-83499 (ENISA EUVD) · GHSA-mqwg-84ff-gqhv (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictMonitorNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.5Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's CNA (WPScan) lists JetFormBuilder — Dynamic Blocks Form Builder versions 3.5.6.2 up to but not including 3.6.5.3 as affected. No release containing a fix is confirmed on record.

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.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 19, 2026

Last Modified

September 21, 2026

Advisory Details (1)

Auto-updated Sep 19, 2026
No fix on record yet.
Web page

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 / 51× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  5. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-25 14:44 UTCEG score recompute
  11. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  16. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-10-19 10:16 UTCEG score recompute
  18. 2026-10-19 10:16 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  19. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  20. 2026-10-18 03:57 UTCEG score recompute
  21. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
Show 65 more
  1. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-10-12 16:24 UTCEG score recompute
  3. 2026-10-12 01:43 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  4. 2026-10-11 20:06 UTCEG score recompute
  5. 2026-10-11 17:19 UTCEG score recompute
  6. 2026-10-11 14:51 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-11 00:21 UTCEG score recompute
  9. 2026-10-11 00:21 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  10. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-10-09 23:47 UTCEG score recompute
  12. 2026-10-09 23:47 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  13. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-10-08 23:16 UTCEG score recompute
  15. 2026-10-08 23:16 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  16. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-10-07 22:46 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  19. 2026-10-06 22:15 UTCEG score recompute
  20. 2026-10-06 22:15 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  21. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-10-05 21:45 UTCEG score recompute
  23. 2026-10-05 21:44 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  24. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  26. 2026-10-04 20:55 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  27. 2026-10-03 20:24 UTCEG score recompute
  28. 2026-10-03 20:24 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  29. 2026-10-02 19:55 UTCEG score recompute
  30. 2026-10-02 19:55 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  31. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  32. 2026-10-01 19:25 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  33. 2026-09-30 18:50 UTCEG score recompute
  34. 2026-09-30 18:50 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  35. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  36. 2026-09-29 18:20 UTCEG score recompute
  37. 2026-09-29 18:20 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  38. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  39. 2026-09-28 17:24 UTCEG score recompute
  40. 2026-09-28 17:24 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  41. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  42. 2026-09-27 16:46 UTCEG score recompute
  43. 2026-09-27 16:46 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  44. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  45. 2026-09-26 16:17 UTCEG score recompute
  46. 2026-09-26 16:17 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  47. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  48. 2026-09-25 15:43 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  49. 2026-09-24 15:13 UTCEG score recompute
  50. 2026-09-24 15:13 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  51. 2026-09-23 14:43 UTCEG score recompute
  52. 2026-09-23 14:43 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  53. 2026-09-22 14:13 UTCEG score recompute
  54. 2026-09-22 14:13 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  55. 2026-09-21 13:43 UTCEG score recompute
  56. 2026-09-21 13:43 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  57. 2026-09-20 14:57 UTCEG score recompute
  58. 2026-09-20 14:57 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv · GitHub CVSS 5.5
  59. 2026-09-19 14:27 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv
  60. 2026-09-19 13:25 UTCEG score recomputeFirst assessed: 5.5 MEDIUM
  61. 2026-09-19 13:25 UTCGHSA enrichmentGHSA-mqwg-84ff-gqhv
  62. 2026-09-19 13:24 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
  63. 2026-09-19 07:17 UTCNVD update
  64. 2026-09-19 06:26 UTCEG score recompute
  65. 2026-09-19 06:25 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-19860?
CVE-2026-19860 is a medium-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-19860 published?
The CVE record for CVE-2026-19860 was published on September 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 21, 2026; the record at its source may have been updated since.
Is CVE-2026-19860 actively exploited?
CVE-2026-19860 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-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).
How do I remediate CVE-2026-19860?
No fix for CVE-2026-19860 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (WPScan) lists JetFormBuilder — Dynamic Blocks Form Builder versions 3.5.6.2 up to but not including 3.6.5.3 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-19860 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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