CVE-2026-39556

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH 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
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

Unauthenticated PHP Object Injection in Konsept <= 1.9 versions.

CVSS v3
8.1
EG Score
8.1(high)
EPSS
22.6%
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 Konsept Theme - Patchstack

https://patchstack.com/database/wordpress/theme/konsept/vulnerability/wordpress-konsept-theme-1-9-php-object-injection-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-39556(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 36× in last 7d / 104× 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 104 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-39556?
CVE-2026-39556 is a high vulnerability published on June 17, 2026. Unauthenticated PHP Object Injection in Konsept <= 1.9 versions.
When was CVE-2026-39556 disclosed?
CVE-2026-39556 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-2026-39556 actively exploited?
CVE-2026-39556 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-39556?
CVE-2026-39556 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-39556?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39556, 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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