CVE-2026-15147

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-08-07. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

The Five Star Restaurant Reservations WordPress plugin before 2.7.23 does not verify the authenticity of incoming payment notifications, failing to validate the payment recipient, amount, and status or to bind the notification to the intended booking, allowing unauthenticated attackers to mark arbitrary pending reservations as paid and confirmed.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Five Star Restaurant Reservations < 2.7.23 – Unauthenticated Payment Bypass and Booking Confirmation via IDOR | CVE 2026-15147 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/9cfa5856-3c30-451d-895e-3d68208d834d/

Vendor Advisories for CVE-2026-15147(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 74× 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 118 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15147?
CVE-2026-15147 is a medium vulnerability published on August 6, 2026. The Five Star Restaurant Reservations WordPress plugin before 2.7.23 does not verify the authenticity of incoming payment notifications, failing to validate the payment recipient, amount, and status or to bind the notification to the intended booking, allowing unauthenticated attackers to mark…
When was CVE-2026-15147 disclosed?
CVE-2026-15147 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15147 actively exploited?
CVE-2026-15147 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 97.4% of all scored CVEs.
What is the CVSS score of CVE-2026-15147?
CVE-2026-15147 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-15147?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15147, 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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