CVE-2026-59558

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-27. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

Unauthenticated Cross Site Scripting (XSS) in Booking Calendar <= 11.4.2 versions.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 27, 2026

Advisory Details (1)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

Cross Site Scripting (XSS) in WordPress Booking Calendar Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/booking/vulnerability/wordpress-booking-calendar-plugin-11-4-2-cross-site-scripting-xss-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-59558(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 21× in last 7d / 110× 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 132 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-59558?
CVE-2026-59558 is a high vulnerability published on July 27, 2026. Unauthenticated Cross Site Scripting (XSS) in Booking Calendar <= 11.4.2 versions.
When was CVE-2026-59558 disclosed?
CVE-2026-59558 was first published in the National Vulnerability Database on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59558 actively exploited?
CVE-2026-59558 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 93.0% of all scored CVEs.
What is the CVSS score of CVE-2026-59558?
CVE-2026-59558 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-59558?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59558, 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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