CVE-2026-47307

HIGHNVD 7.55.5▼
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-19. NVD baseline CVSS 7.5; sources differ by 2.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions.

This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.

CVSS v3
7.5
EG Score
5.5(medium)
EPSS
9.2%
KEV
Not listed

Published

May 19, 2026

Last Modified

June 2, 2026

Advisory Details (1)

Auto-updated Jun 10, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
github_pr

Improve error throwing

Fix merged in Samsung/walrus PR #409 on 2026-04-28 — awaiting tagged release

https://github.com/Samsung/walrus/pull/409

Vendor Advisories for CVE-2026-47307(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 / 49× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-08 15:16 UTCEPSS rescore
  9. 2026-07-07 13:46 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 02:23 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-01 15:07 UTCEPSS rescore
  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-29 21:00 UTCEG score recompute
  17. 2026-06-29 21:00 UTCGHSA enrichment
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-29 14:06 UTCEPSS rescore
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-27 20:52 UTCEG score recompute
  24. 2026-06-27 20:52 UTCGHSA enrichment
  25. 2026-06-27 03:08 UTCEPSS rescore
Show 75 more
  1. 2026-06-26 19:52 UTCEG score recompute
  2. 2026-06-26 19:52 UTCGHSA enrichment
  3. 2026-06-25 17:24 UTCEG score recompute
  4. 2026-06-25 17:24 UTCGHSA enrichment
  5. 2026-06-25 13:49 UTCEPSS rescore
  6. 2026-06-24 14:05 UTCEPSS rescore
  7. 2026-06-23 21:33 UTCEPSS rescore
  8. 2026-06-23 21:33 UTCEPSS rescore
  9. 2026-06-22 14:25 UTCEPSS rescore
  10. 2026-06-22 14:25 UTCEPSS rescore
  11. 2026-06-21 14:56 UTCEPSS rescore
  12. 2026-06-21 14:56 UTCEPSS rescore
  13. 2026-06-21 01:59 UTCEPSS rescore
  14. 2026-06-21 01:59 UTCEPSS rescore
  15. 2026-06-19 19:26 UTCEPSS rescore
  16. 2026-06-19 19:26 UTCEPSS rescore
  17. 2026-06-18 17:52 UTCEPSS rescore
  18. 2026-06-18 17:52 UTCEPSS rescore
  19. 2026-06-17 21:32 UTCEG score recompute
  20. 2026-06-17 21:31 UTCGHSA enrichment
  21. 2026-06-17 17:53 UTCEPSS rescore
  22. 2026-06-16 22:06 UTCEG score recompute
  23. 2026-06-16 22:06 UTCGHSA enrichment
  24. 2026-06-16 17:53 UTCEPSS rescore
  25. 2026-06-15 23:05 UTCEG score recompute
  26. 2026-06-15 23:05 UTCGHSA enrichment
  27. 2026-06-15 17:49 UTCEPSS rescore
  28. 2026-06-15 17:49 UTCEPSS rescore
  29. 2026-06-14 23:18 UTCEPSS rescore
  30. 2026-06-14 21:51 UTCEG score recompute
  31. 2026-06-14 21:50 UTCGHSA enrichment
  32. 2026-06-13 23:00 UTCEPSS rescore
  33. 2026-06-13 22:49 UTCEG score recompute
  34. 2026-06-13 22:49 UTCGHSA enrichment
  35. 2026-06-12 23:12 UTCEPSS rescore
  36. 2026-06-12 23:12 UTCEPSS rescore
  37. 2026-06-12 17:45 UTCEG score recompute
  38. 2026-06-12 17:45 UTCGHSA enrichment
  39. 2026-06-11 18:44 UTCEG score recompute
  40. 2026-06-11 18:44 UTCGHSA enrichment
  41. 2026-06-11 14:00 UTCEPSS rescore
  42. 2026-06-10 22:18 UTCEPSS rescore
  43. 2026-06-10 19:44 UTCEG score recompute
  44. 2026-06-10 19:44 UTCGHSA enrichment
  45. 2026-06-10 13:22 UTCEPSS rescore
  46. 2026-06-10 13:22 UTCEPSS rescore
  47. 2026-06-09 20:44 UTCEG score recompute
  48. 2026-06-09 20:44 UTCGHSA enrichment
  49. 2026-06-08 23:31 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  50. 2026-06-08 21:40 UTCEG score recompute
  51. 2026-06-08 21:40 UTCGHSA enrichment
  52. 2026-06-08 14:17 UTCEPSS rescore
  53. 2026-06-08 14:17 UTCEPSS rescore
  54. 2026-06-07 22:13 UTCEG score recompute
  55. 2026-06-07 22:13 UTCGHSA enrichment
  56. 2026-06-07 15:25 UTCEPSS rescore
  57. 2026-06-07 15:25 UTCEPSS rescore
  58. 2026-06-06 23:13 UTCEG score recompute
  59. 2026-06-06 23:13 UTCGHSA enrichment
  60. 2026-06-06 13:47 UTCEPSS rescore
  61. 2026-06-06 13:47 UTCEPSS rescore
  62. 2026-06-06 00:13 UTCEG score recompute
  63. 2026-06-06 00:12 UTCGHSA enrichment
  64. 2026-06-05 22:47 UTCEPSS rescore
  65. 2026-06-05 06:10 UTCEPSS rescore
  66. 2026-06-05 06:10 UTCEPSS rescore
  67. 2026-06-05 01:12 UTCEG score recompute
  68. 2026-06-05 01:12 UTCGHSA enrichment
  69. 2026-06-04 13:12 UTCEPSS rescore
  70. 2026-06-04 13:12 UTCEPSS rescore
  71. 2026-06-04 02:12 UTCEG score recompute
  72. 2026-06-04 02:12 UTCGHSA enrichment
  73. 2026-06-03 03:11 UTCEG score recompute
  74. 2026-06-03 03:11 UTCGHSA enrichment
  75. 2026-06-02 20:13 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-47307?
CVE-2026-47307 is a high vulnerability published on May 19, 2026. NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions. This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.
When was CVE-2026-47307 disclosed?
CVE-2026-47307 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47307 actively exploited?
CVE-2026-47307 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47307?
CVE-2026-47307 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 5.5.
How do I remediate CVE-2026-47307?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47307, 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

Explore the affected products and dependency analysis for CVE-2026-47307

Explore →

Is Your Infrastructure Affected by CVE-2026-47307?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs