CVE-2026-19513

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-01. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 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: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

The Gravity Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.0.2. This is due to insufficient validation of multi-file upload chunk state in the GFAsyncUpload::upload() function, where public form state URL hashes can be reused as chunk continuation hashes and attacker-controlled temporary filenames are accepted before sanitization. This makes it possible for unauthenticated attackers, when a public form contains a File Upload field with Multiple Files enabled, to upload a valid PNG/PDF polyglot to an attacker-selected public .php or .html filename in the Gravity Forms temporary upload directory. This can lead to remote code execution on WordPress systems that use NGINX or other non .htaccess respecting web servers. NOTE: During installation and activation, the Gravity Forms plugin places a .htaccess file in this directory, which prevents this vulnerability from being exploited despite the PHP file being written to the temporary upload directory. In these cases where PHP execution is blocked, attacker-written HTML can result in stored same-origin cross-site scripting if a victim visits the generated file URL.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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 computed
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Sep 1, 2026
No patch confirmed yet.
generic

Gravity Forms Changelog - Gravity Forms Documentation

https://docs.gravityforms.com/gravityforms-change-log/

Vendor Advisories for CVE-2026-19513(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 22× in last 7d / 75× 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. 2026-09-21 06:03 UTCEG score recompute
  2. 2026-09-21 06:02 UTCGHSA enrichment
  3. 2026-09-20 17:46 UTCGHSA enrichment
  4. 2026-09-20 05:30 UTCGHSA enrichment
  5. 2026-09-19 17:14 UTCEG score recompute
  6. 2026-09-19 17:14 UTCGHSA enrichment
  7. 2026-09-19 04:57 UTCEG score recompute
  8. 2026-09-19 04:57 UTCGHSA enrichment
  9. 2026-09-18 19:27 UTCEPSS rescore
  10. 2026-09-18 16:41 UTCGHSA enrichment
  11. 2026-09-18 04:26 UTCEG score recompute
  12. 2026-09-18 04:26 UTCGHSA enrichment
  13. 2026-09-17 16:10 UTCGHSA enrichment
  14. 2026-09-17 03:55 UTCGHSA enrichment
  15. 2026-09-16 15:39 UTCEG score recompute
  16. 2026-09-16 15:39 UTCGHSA enrichment
  17. 2026-09-16 14:07 UTCEPSS rescore
  18. 2026-09-16 05:14 UTCEPSS rescore
  19. 2026-09-16 03:23 UTCGHSA enrichment
  20. 2026-09-15 15:06 UTCEG score recompute
  21. 2026-09-15 15:06 UTCGHSA enrichment
  22. 2026-09-15 02:42 UTCGHSA enrichment
  23. 2026-09-14 14:26 UTCGHSA enrichment
  24. 2026-09-14 02:10 UTCEG score recompute
  25. 2026-09-14 02:10 UTCGHSA enrichment
Show 50 more
  1. 2026-09-13 16:46 UTCEPSS rescore
  2. 2026-09-13 13:55 UTCGHSA enrichment
  3. 2026-09-13 01:40 UTCEG score recompute
  4. 2026-09-13 01:40 UTCGHSA enrichment
  5. 2026-09-12 15:00 UTCEPSS rescore
  6. 2026-09-12 13:24 UTCGHSA enrichment
  7. 2026-09-12 01:09 UTCEG score recompute
  8. 2026-09-12 01:09 UTCGHSA enrichment
  9. 2026-09-11 14:52 UTCEPSS rescore
  10. 2026-09-11 12:54 UTCEG score recompute
  11. 2026-09-11 12:54 UTCGHSA enrichment
  12. 2026-09-11 09:36 UTCEPSS rescore
  13. 2026-09-11 00:26 UTCGHSA enrichment
  14. 2026-09-10 12:10 UTCEG score recompute
  15. 2026-09-10 12:10 UTCGHSA enrichment
  16. 2026-09-10 09:34 UTCEPSS rescore
  17. 2026-09-09 23:55 UTCGHSA enrichment
  18. 2026-09-09 11:40 UTCGHSA enrichment
  19. 2026-09-08 23:24 UTCEG score recompute
  20. 2026-09-08 23:24 UTCGHSA enrichment
  21. 2026-09-08 22:00 UTCEPSS rescore
  22. 2026-09-08 03:11 UTCEG score recompute
  23. 2026-09-08 03:11 UTCGHSA enrichment
  24. 2026-09-07 16:01 UTCEPSS rescore
  25. 2026-09-07 14:55 UTCGHSA enrichment
  26. 2026-09-07 00:35 UTCEG score recompute
  27. 2026-09-07 00:35 UTCGHSA enrichment
  28. 2026-09-06 13:47 UTCEPSS rescore
  29. 2026-09-06 12:19 UTCGHSA enrichment
  30. 2026-09-06 00:03 UTCEG score recompute
  31. 2026-09-06 00:03 UTCGHSA enrichment
  32. 2026-09-05 11:45 UTCGHSA enrichment
  33. 2026-09-04 23:27 UTCEG score recompute
  34. 2026-09-04 23:27 UTCGHSA enrichment
  35. 2026-09-04 10:22 UTCEG score recompute
  36. 2026-09-04 10:22 UTCGHSA enrichment
  37. 2026-09-04 05:06 UTCEPSS rescore
  38. 2026-09-03 22:06 UTCGHSA enrichment
  39. 2026-09-03 09:49 UTCGHSA enrichment
  40. 2026-09-02 21:33 UTCEG score recompute
  41. 2026-09-02 21:32 UTCGHSA enrichment
  42. 2026-09-02 14:11 UTCEPSS rescore
  43. 2026-09-02 09:16 UTCGHSA enrichment
  44. 2026-09-01 20:58 UTCGHSA enrichment
  45. 2026-09-01 15:40 UTCEG score recompute
  46. 2026-09-01 15:40 UTCGHSA enrichment
  47. 2026-09-01 15:04 UTCEG score recompute
  48. 2026-09-01 14:34 UTCEG score recompute
  49. 2026-09-01 13:40 UTCEG score recompute
  50. 2026-09-01 13:39 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19513?
CVE-2026-19513 is a high vulnerability published on September 1, 2026. The Gravity Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.0.2. This is due to insufficient validation of multi-file upload chunk state in the GFAsyncUpload::upload() function, where public form state URL hashes can be reused as chunk…
When was CVE-2026-19513 disclosed?
CVE-2026-19513 was first published in the National Vulnerability Database on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19513 actively exploited?
CVE-2026-19513 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 58.0% of all scored CVEs.
What is the CVSS score of CVE-2026-19513?
CVE-2026-19513 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-19513?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19513, 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

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