CVE-2026-3907

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-07-10. a secondary CVSS source baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: None knownExposed: 0

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

The Hostel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wphostel-book' shortcode in all versions up to and including 1.1.7. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, the second shortcode attribute (used as button text) is passed to the $text variable without sanitization at line 79 and then output directly into an HTML value attribute at line 91 without esc_attr() or any other escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS v3
6.4
EG Score
6.4(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 10, 2026

References (8)

Vendor Advisories for CVE-2026-3907(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 / 79× 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 123 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-3907?
CVE-2026-3907 is a medium vulnerability published on July 10, 2026. The Hostel plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wphostel-book' shortcode in all versions up to and including 1.1.7. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, the second shortcode…
When was CVE-2026-3907 disclosed?
CVE-2026-3907 was first published in the National Vulnerability Database on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3907 actively exploited?
CVE-2026-3907 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 64.9% of all scored CVEs.
What is the CVSS score of CVE-2026-3907?
CVE-2026-3907 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-3907?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3907, 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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