CVE-2026-19116

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-02. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

The User Frontend WordPress plugin before 4.3.11 does not prevent user-supplied field values from being deserialized when a submitted post is reopened in its frontend editing form, allowing authenticated users with subscriber-level access and above to perform PHP Object Injection, which may lead to remote code execution when a suitable gadget chain is present on the site.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

WP User Frontend < 4.3.11 – Subscriber+ PHP Object Injection via Frontend Post Edit Form | CVE 2026-19116 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/019d83bd-24d3-4575-9d0b-55f75fdb0bfa/

Vendor Advisories for CVE-2026-19116(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 24× in last 7d / 76× 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 00:34 UTCEG score recompute
  2. 2026-09-21 00:34 UTCGHSA enrichment
  3. 2026-09-20 12:32 UTCGHSA enrichment
  4. 2026-09-20 00:14 UTCEG score recompute
  5. 2026-09-20 00:14 UTCGHSA enrichment
  6. 2026-09-19 12:12 UTCGHSA enrichment
  7. 2026-09-19 00:10 UTCEG score recompute
  8. 2026-09-19 00:09 UTCGHSA enrichment
  9. 2026-09-18 19:27 UTCEPSS rescore
  10. 2026-09-18 12:08 UTCGHSA enrichment
  11. 2026-09-18 00:06 UTCEG score recompute
  12. 2026-09-18 00:06 UTCGHSA enrichment
  13. 2026-09-17 12:05 UTCGHSA enrichment
  14. 2026-09-17 00:04 UTCEG score recompute
  15. 2026-09-17 00:04 UTCGHSA enrichment
  16. 2026-09-16 14:07 UTCEPSS rescore
  17. 2026-09-16 12:03 UTCEG score recompute
  18. 2026-09-16 12:03 UTCGHSA enrichment
  19. 2026-09-16 05:14 UTCEPSS rescore
  20. 2026-09-16 00:02 UTCGHSA enrichment
  21. 2026-09-15 12:01 UTCEG score recompute
  22. 2026-09-15 12:01 UTCGHSA enrichment
  23. 2026-09-15 00:00 UTCGHSA enrichment
  24. 2026-09-14 11:59 UTCGHSA enrichment
  25. 2026-09-13 23:58 UTCEG score recompute
Show 51 more
  1. 2026-09-13 23:58 UTCGHSA enrichment
  2. 2026-09-13 16:46 UTCEPSS rescore
  3. 2026-09-13 11:57 UTCGHSA enrichment
  4. 2026-09-12 23:56 UTCEG score recompute
  5. 2026-09-12 23:56 UTCGHSA enrichment
  6. 2026-09-12 15:00 UTCEPSS rescore
  7. 2026-09-12 11:55 UTCGHSA enrichment
  8. 2026-09-11 23:54 UTCEG score recompute
  9. 2026-09-11 23:54 UTCGHSA enrichment
  10. 2026-09-11 14:52 UTCEPSS rescore
  11. 2026-09-11 11:53 UTCEG score recompute
  12. 2026-09-11 11:53 UTCGHSA enrichment
  13. 2026-09-11 09:36 UTCEPSS rescore
  14. 2026-09-10 23:52 UTCGHSA enrichment
  15. 2026-09-10 11:36 UTCEG score recompute
  16. 2026-09-10 11:36 UTCGHSA enrichment
  17. 2026-09-10 09:34 UTCEPSS rescore
  18. 2026-09-09 23:33 UTCGHSA enrichment
  19. 2026-09-09 11:17 UTCGHSA enrichment
  20. 2026-09-08 23:15 UTCEG score recompute
  21. 2026-09-08 23:15 UTCGHSA enrichment
  22. 2026-09-08 22:00 UTCEPSS rescore
  23. 2026-09-08 06:25 UTCGHSA enrichment
  24. 2026-09-07 18:23 UTCEG score recompute
  25. 2026-09-07 18:23 UTCGHSA enrichment
  26. 2026-09-07 16:01 UTCEPSS rescore
  27. 2026-09-07 06:22 UTCGHSA enrichment
  28. 2026-09-06 18:18 UTCEG score recompute
  29. 2026-09-06 18:18 UTCGHSA enrichment
  30. 2026-09-06 13:47 UTCEPSS rescore
  31. 2026-09-06 06:17 UTCGHSA enrichment
  32. 2026-09-05 18:14 UTCEG score recompute
  33. 2026-09-05 18:14 UTCGHSA enrichment
  34. 2026-09-05 06:12 UTCGHSA enrichment
  35. 2026-09-04 18:11 UTCEG score recompute
  36. 2026-09-04 18:11 UTCGHSA enrichment
  37. 2026-09-04 06:05 UTCEG score recompute
  38. 2026-09-04 06:05 UTCGHSA enrichment
  39. 2026-09-04 05:06 UTCEPSS rescore
  40. 2026-09-03 18:04 UTCGHSA enrichment
  41. 2026-09-03 11:30 UTCGHSA enrichment
  42. 2026-09-02 23:26 UTCEG score recompute
  43. 2026-09-02 23:26 UTCGHSA enrichment
  44. 2026-09-02 14:11 UTCEPSS rescore
  45. 2026-09-02 11:25 UTCGHSA enrichment
  46. 2026-09-02 10:52 UTCEG score recompute▲ 8.80
  47. 2026-09-02 10:52 UTCGHSA enrichment
  48. 2026-09-02 10:48 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  49. 2026-09-02 06:26 UTCNVD update
  50. 2026-09-02 06:08 UTCEG score recompute
  51. 2026-09-02 06:05 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19116?
CVE-2026-19116 is a high vulnerability published on September 2, 2026. The User Frontend WordPress plugin before 4.3.11 does not prevent user-supplied field values from being deserialized when a submitted post is reopened in its frontend editing form, allowing authenticated users with subscriber-level access and above to perform PHP Object Injection, which may lead to…
When was CVE-2026-19116 disclosed?
CVE-2026-19116 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19116 actively exploited?
CVE-2026-19116 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 57.4% of all scored CVEs.
What is the CVSS score of CVE-2026-19116?
CVE-2026-19116 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-19116?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19116, 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-2026-19116

Explore →

Is Your Infrastructure Affected by CVE-2026-19116?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs