CVE-2026-27400

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-06-17. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.6Exploit: None knownExposed: 0

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

Unauthenticated Arbitrary File Deletion in BookPro <= 1.1.0 versions.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity86% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Jun 18, 2026
Patch available.
generic Patch Available

Arbitrary File Deletion in WordPress BookPro Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/ovabookpro/vulnerability/wordpress-bookpro-plugin-1-1-0-arbitrary-file-deletion-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-27400(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 7× in last 7d / 42× 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 256 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-27400?
CVE-2026-27400 is a high vulnerability published on June 17, 2026. Unauthenticated Arbitrary File Deletion in BookPro <= 1.1.0 versions.
When was CVE-2026-27400 disclosed?
CVE-2026-27400 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-2026-27400 actively exploited?
CVE-2026-27400 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-2026-27400?
CVE-2026-27400 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-27400?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27400, 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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