CVE-2026-9851

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-06-06. a secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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: 0%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 Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the package_app_action AJAX endpoint, where the handler only validates a nonce and the dispatcher invokes Schedule::updateUser() with the $administrator argument hard-coded to 1, bypassing the only owner-restriction check inside that function and allowing the target user to be determined solely by attacker-supplied input passed directly to wp_update_user(). This makes it possible for authenticated attackers, with Editor-level access and above, to change the email address and password of any account, including Administrator accounts, resulting in a full site takeover.

CVSS v3
7.2
EG Score
7.2(medium)
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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

June 6, 2026

Last Modified

July 23, 2026

References (5)

Vendor Advisories for CVE-2026-9851(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 12× in last 7d / 91× 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 224 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9851?
CVE-2026-9851 is a high vulnerability published on June 6, 2026. The Booking Package plugin for WordPress is vulnerable to Privilege Escalation via Account Takeover in versions up to, and including, 1.7.16. This is due to a missing capability check on the 'updateUser' branch of the packageappaction AJAX endpoint, where the handler only validates a nonce and the…
When was CVE-2026-9851 disclosed?
CVE-2026-9851 was first published in the National Vulnerability Database on June 6, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9851 actively exploited?
CVE-2026-9851 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 71.4% of all scored CVEs.
What is the CVSS score of CVE-2026-9851?
CVE-2026-9851 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-9851?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9851, 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.

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