CVE-2026-56053

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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.

Subscriber PHP Object Injection in EventPrime <= 4.3.4.1 versions.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
No patch confirmed yet.
generic

PHP Object Injection in WordPress EventPrime Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/eventprime-event-calendar-management/vulnerability/wordpress-eventprime-plugin-4-3-4-1-php-object-injection-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-56053(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 17× in last 7d / 101× 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 204 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-56053?
CVE-2026-56053 is a high vulnerability published on June 25, 2026. Subscriber PHP Object Injection in EventPrime <= 4.3.4.1 versions.
When was CVE-2026-56053 disclosed?
CVE-2026-56053 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56053 actively exploited?
CVE-2026-56053 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 58.2% of all scored CVEs.
What is the CVSS score of CVE-2026-56053?
CVE-2026-56053 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-56053?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56053, 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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