CVE-2026-40758

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-17. 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: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

Unauthenticated PHP Object Injection in Léonie <= 1.2.1 versions.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Jun 18, 2026
No patch confirmed yet.
generic

PHP Object Injection in WordPress Léonie Theme - Patchstack

https://patchstack.com/database/wordpress/theme/lonie/vulnerability/wordpress-leonie-theme-1-2-1-php-object-injection-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-40758(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 11× in last 7d / 96× 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.

Showing the most recent 100 of 220 total refreshes for this CVE.

  1. 2026-08-28 21:41 UTCEPSS rescore
  2. 2026-08-27 14:25 UTCEPSS rescore
  3. 2026-08-26 14:46 UTCEPSS rescore
  4. 2026-08-25 13:49 UTCEPSS rescore
  5. 2026-08-24 22:28 UTCEG score recompute
  6. 2026-08-24 22:28 UTCGHSA enrichment
  7. 2026-08-24 07:07 UTCGHSA enrichment
  8. 2026-08-23 16:20 UTCGHSA enrichment
  9. 2026-08-23 04:44 UTCEG score recompute
  10. 2026-08-23 04:44 UTCGHSA enrichment
  11. 2026-08-23 00:19 UTCEPSS rescore
  12. 2026-08-21 23:49 UTCEPSS rescore
  13. 2026-08-21 18:49 UTCGHSA enrichment
  14. 2026-08-21 07:24 UTCEG score recompute
  15. 2026-08-21 07:24 UTCGHSA enrichment
  16. 2026-08-20 22:55 UTCEPSS rescore
  17. 2026-08-20 19:37 UTCGHSA enrichment
  18. 2026-08-20 08:18 UTCEG score recompute
  19. 2026-08-20 08:18 UTCGHSA enrichment
  20. 2026-08-19 17:03 UTCEPSS rescore
  21. 2026-08-19 08:14 UTCEG score recompute
  22. 2026-08-19 08:14 UTCGHSA enrichment
  23. 2026-08-18 13:48 UTCEPSS rescore
  24. 2026-08-17 13:51 UTCEG score recompute
  25. 2026-08-17 13:51 UTCGHSA enrichment
Show 75 more
  1. 2026-08-17 13:47 UTCEPSS rescore
  2. 2026-08-17 02:32 UTCGHSA enrichment
  3. 2026-08-16 15:12 UTCEG score recompute
  4. 2026-08-16 15:12 UTCGHSA enrichment
  5. 2026-08-16 14:56 UTCEPSS rescore
  6. 2026-08-16 03:52 UTCEG score recompute
  7. 2026-08-16 03:52 UTCGHSA enrichment
  8. 2026-08-16 02:14 UTCEPSS rescore
  9. 2026-08-15 16:33 UTCGHSA enrichment
  10. 2026-08-15 05:13 UTCEG score recompute
  11. 2026-08-15 05:13 UTCGHSA enrichment
  12. 2026-08-15 01:30 UTCEPSS rescore
  13. 2026-08-14 17:53 UTCGHSA enrichment
  14. 2026-08-14 06:33 UTCEG score recompute
  15. 2026-08-14 06:33 UTCGHSA enrichment
  16. 2026-08-13 22:00 UTCEPSS rescore
  17. 2026-08-13 19:13 UTCGHSA enrichment
  18. 2026-08-13 07:50 UTCGHSA enrichment
  19. 2026-08-12 20:23 UTCEG score recompute
  20. 2026-08-12 20:23 UTCGHSA enrichment
  21. 2026-08-12 13:51 UTCEPSS rescore
  22. 2026-08-12 09:04 UTCGHSA enrichment
  23. 2026-08-11 21:44 UTCEG score recompute
  24. 2026-08-11 21:44 UTCGHSA enrichment
  25. 2026-08-11 13:43 UTCEPSS rescore
  26. 2026-08-11 10:24 UTCEG score recompute
  27. 2026-08-11 10:24 UTCGHSA enrichment
  28. 2026-08-11 00:00 UTCEPSS rescore
  29. 2026-08-10 23:05 UTCGHSA enrichment
  30. 2026-08-10 11:46 UTCGHSA enrichment
  31. 2026-08-10 00:26 UTCEG score recompute
  32. 2026-08-10 00:26 UTCGHSA enrichment
  33. 2026-08-09 13:46 UTCEPSS rescore
  34. 2026-08-09 13:07 UTCGHSA enrichment
  35. 2026-08-09 01:47 UTCEG score recompute
  36. 2026-08-09 01:47 UTCGHSA enrichment
  37. 2026-08-08 16:37 UTCEPSS rescore
  38. 2026-08-08 14:28 UTCGHSA enrichment
  39. 2026-08-08 03:08 UTCEG score recompute
  40. 2026-08-08 03:08 UTCGHSA enrichment
  41. 2026-08-07 15:48 UTCGHSA enrichment
  42. 2026-08-07 04:28 UTCGHSA enrichment
  43. 2026-08-06 17:08 UTCEG score recompute
  44. 2026-08-06 17:08 UTCGHSA enrichment
  45. 2026-08-06 13:46 UTCEPSS rescore
  46. 2026-08-06 05:49 UTCEG score recompute
  47. 2026-08-06 05:49 UTCGHSA enrichment
  48. 2026-08-05 19:17 UTCEPSS rescore
  49. 2026-08-05 18:29 UTCGHSA enrichment
  50. 2026-08-05 03:58 UTCGHSA enrichment
  51. 2026-08-04 15:28 UTCEG score recompute
  52. 2026-08-04 15:28 UTCGHSA enrichment
  53. 2026-08-04 15:10 UTCEPSS rescore
  54. 2026-08-04 10:38 UTCEPSS rescore
  55. 2026-08-03 20:08 UTCEG score recompute
  56. 2026-08-03 20:08 UTCGHSA enrichment
  57. 2026-08-03 10:36 UTCEPSS rescore
  58. 2026-08-03 08:48 UTCGHSA enrichment
  59. 2026-08-02 18:47 UTCGHSA enrichment
  60. 2026-08-02 07:27 UTCGHSA enrichment
  61. 2026-08-01 20:07 UTCGHSA enrichment
  62. 2026-08-01 08:47 UTCEG score recompute
  63. 2026-08-01 08:47 UTCGHSA enrichment
  64. 2026-08-01 04:16 UTCEPSS rescore
  65. 2026-07-31 21:27 UTCGHSA enrichment
  66. 2026-07-31 10:07 UTCGHSA enrichment
  67. 2026-07-30 22:46 UTCEG score recompute
  68. 2026-07-30 22:46 UTCGHSA enrichment
  69. 2026-07-30 16:28 UTCEPSS rescore
  70. 2026-07-30 03:46 UTCEG score recompute
  71. 2026-07-30 03:46 UTCGHSA enrichment
  72. 2026-07-30 01:30 UTCEPSS rescore
  73. 2026-07-29 13:45 UTCGHSA enrichment
  74. 2026-07-29 02:25 UTCEG score recompute
  75. 2026-07-29 02:25 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-40758?
CVE-2026-40758 is a high vulnerability published on June 17, 2026. Unauthenticated PHP Object Injection in Léonie <= 1.2.1 versions.
When was CVE-2026-40758 disclosed?
CVE-2026-40758 was first published in the National Vulnerability Database on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40758 actively exploited?
CVE-2026-40758 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 75.7% of all scored CVEs.
What is the CVSS score of CVE-2026-40758?
CVE-2026-40758 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-40758?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40758, 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-2026-40758

Explore →

Is Your Infrastructure Affected by CVE-2026-40758?

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

Start Free Scan →Browse All CVEs