CVE-2026-14558

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-08-28. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.2Exploit: 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 4.3.10 does not properly validate field type definitions and deserialises user-controlled post metadata when rendering submitted posts, allowing users with Editor-level access and above to inject arbitrary PHP objects, which can lead to remote code execution when a suitable POP chain is present on the site.

CVSS v3
7.2
EG Score
7.2(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity72% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

WP User Frontend < 4.3.10 – Editor+ PHP Object Injection via AI Form Builder | CVE 2026-14558 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/217303f4-4363-46f6-8aee-8e0c1aedc271/

Vendor Advisories for CVE-2026-14558(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 21× in last 7d / 89× 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 02:55 UTCGHSA enrichment
  2. 2026-09-20 13:54 UTCGHSA enrichment
  3. 2026-09-20 00:54 UTCEG score recompute
  4. 2026-09-20 00:54 UTCGHSA enrichment
  5. 2026-09-19 11:54 UTCGHSA enrichment
  6. 2026-09-18 22:52 UTCEG score recompute
  7. 2026-09-18 22:52 UTCGHSA enrichment
  8. 2026-09-18 19:27 UTCEPSS rescore
  9. 2026-09-18 09:52 UTCGHSA enrichment
  10. 2026-09-17 20:52 UTCEG score recompute
  11. 2026-09-17 20:52 UTCGHSA enrichment
  12. 2026-09-17 03:54 UTCGHSA enrichment
  13. 2026-09-16 14:54 UTCEG score recompute
  14. 2026-09-16 14:54 UTCGHSA enrichment
  15. 2026-09-16 14:07 UTCEPSS rescore
  16. 2026-09-16 05:14 UTCEPSS rescore
  17. 2026-09-16 01:54 UTCGHSA enrichment
  18. 2026-09-15 12:54 UTCEG score recompute
  19. 2026-09-15 12:54 UTCGHSA enrichment
  20. 2026-09-14 23:53 UTCGHSA enrichment
  21. 2026-09-14 10:53 UTCGHSA enrichment
  22. 2026-09-13 21:53 UTCEG score recompute
  23. 2026-09-13 21:53 UTCGHSA enrichment
  24. 2026-09-13 16:46 UTCEPSS rescore
  25. 2026-09-13 08:52 UTCGHSA enrichment
Show 64 more
  1. 2026-09-12 19:52 UTCEG score recompute
  2. 2026-09-12 19:52 UTCGHSA enrichment
  3. 2026-09-12 15:00 UTCEPSS rescore
  4. 2026-09-12 06:52 UTCGHSA enrichment
  5. 2026-09-11 17:51 UTCEG score recompute
  6. 2026-09-11 17:51 UTCGHSA enrichment
  7. 2026-09-11 14:52 UTCEPSS rescore
  8. 2026-09-11 09:36 UTCEPSS rescore
  9. 2026-09-11 04:51 UTCGHSA enrichment
  10. 2026-09-10 15:51 UTCEG score recompute
  11. 2026-09-10 15:51 UTCGHSA enrichment
  12. 2026-09-10 09:34 UTCEPSS rescore
  13. 2026-09-10 02:50 UTCGHSA enrichment
  14. 2026-09-09 13:48 UTCGHSA enrichment
  15. 2026-09-09 00:33 UTCEG score recompute
  16. 2026-09-09 00:33 UTCGHSA enrichment
  17. 2026-09-08 22:00 UTCEPSS rescore
  18. 2026-09-08 04:04 UTCEG score recompute
  19. 2026-09-08 04:04 UTCGHSA enrichment
  20. 2026-09-07 16:01 UTCEPSS rescore
  21. 2026-09-07 15:03 UTCGHSA enrichment
  22. 2026-09-07 00:35 UTCEG score recompute
  23. 2026-09-07 00:35 UTCGHSA enrichment
  24. 2026-09-06 13:47 UTCEPSS rescore
  25. 2026-09-06 11:34 UTCGHSA enrichment
  26. 2026-09-05 22:34 UTCEG score recompute
  27. 2026-09-05 22:34 UTCGHSA enrichment
  28. 2026-09-05 09:34 UTCGHSA enrichment
  29. 2026-09-04 20:34 UTCEG score recompute
  30. 2026-09-04 20:33 UTCGHSA enrichment
  31. 2026-09-04 07:12 UTCEG score recompute
  32. 2026-09-04 07:12 UTCGHSA enrichment
  33. 2026-09-04 05:06 UTCEPSS rescore
  34. 2026-09-03 18:12 UTCGHSA enrichment
  35. 2026-09-03 05:09 UTCGHSA enrichment
  36. 2026-09-02 16:06 UTCEG score recompute
  37. 2026-09-02 16:06 UTCGHSA enrichment
  38. 2026-09-02 14:11 UTCEPSS rescore
  39. 2026-09-02 03:06 UTCGHSA enrichment
  40. 2026-09-01 14:05 UTCEG score recompute
  41. 2026-09-01 14:05 UTCGHSA enrichment
  42. 2026-09-01 13:53 UTCEPSS rescore
  43. 2026-09-01 04:39 UTCEPSS rescore
  44. 2026-09-01 01:03 UTCGHSA enrichment
  45. 2026-08-31 12:00 UTCGHSA enrichment
  46. 2026-08-30 23:00 UTCEG score recompute
  47. 2026-08-30 23:00 UTCGHSA enrichment
  48. 2026-08-30 19:17 UTCEPSS rescore
  49. 2026-08-30 10:00 UTCEG score recompute
  50. 2026-08-30 10:00 UTCGHSA enrichment
  51. 2026-08-30 01:22 UTCEPSS rescore
  52. 2026-08-29 21:00 UTCGHSA enrichment
  53. 2026-08-29 07:59 UTCEG score recompute
  54. 2026-08-29 07:59 UTCGHSA enrichment
  55. 2026-08-28 21:41 UTCEPSS rescore
  56. 2026-08-28 18:58 UTCEG score recompute
  57. 2026-08-28 18:58 UTCGHSA enrichment
  58. 2026-08-28 16:36 UTCGHSA enrichment
  59. 2026-08-28 15:32 UTCEG score recompute▲ 7.20
  60. 2026-08-28 15:32 UTCGHSA enrichment
  61. 2026-08-28 15:25 UTCMITRE cvelistV5CVSS v3 → 7.2 · severity → HIGH
  62. 2026-08-28 08:20 UTCNVD update
  63. 2026-08-28 07:39 UTCEG score recompute
  64. 2026-08-28 07:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-14558?
CVE-2026-14558 is a high vulnerability published on August 28, 2026. The User Frontend WordPress plugin before 4.3.10 does not properly validate field type definitions and deserialises user-controlled post metadata when rendering submitted posts, allowing users with Editor-level access and above to inject arbitrary PHP objects, which can lead to remote code…
When was CVE-2026-14558 disclosed?
CVE-2026-14558 was first published in the National Vulnerability Database on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14558 actively exploited?
CVE-2026-14558 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 56.1% of all scored CVEs.
What is the CVSS score of CVE-2026-14558?
CVE-2026-14558 has a CVSS v3.1 base score of 7.2 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-14558?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-14558, 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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