CVE-2026-47356

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-19. NVD baseline CVSS 7.5; sources differ by 0.0.

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.

Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via the webhook_url parameter in the file scan endpoint (POST /v1/{iac}/{iacVersion}/{cloud}/local/file/scan) when running in server mode. An unauthenticated remote attacker can supply an arbitrary URL as the webhook_url multipart form parameter. After scanning the uploaded file, Terrascan sends an HTTP POST request to the attacker-controlled URL containing the full scan results as a JSON body, with the attacker-supplied webhook_token forwarded as a Bearer token in the Authorization header. The retryable HTTP client retries up to 10 times on failure. This affects deployments running terrascan in server mode (terrascan server), which binds to 0.0.0.0 with no authentication. Note: Terrascan was archived in August 2023 and no patch will be released.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
39.3%
KEV
Not listed

Published

May 19, 2026

Last Modified

May 20, 2026

Advisory Details (1)

Auto-updated Jun 4, 2026
No patch confirmed yet.
generic

GitHub - tenable/terrascan: Detect compliance and security violations across Infrastructure as Code to mitigate risk before provisioning cloud native infrastructure. · GitHub

https://github.com/tenable/terrascan

Vendor Advisories for CVE-2026-47356(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 / 64× 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 148 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-47356?
CVE-2026-47356 is a high vulnerability published on May 19, 2026. Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via the webhookurl parameter in the file scan endpoint (POST /v1/{iac}/{iacVersion}/{cloud}/local/file/scan) when running in server mode. An unauthenticated remote attacker can supply an arbitrary URL as the webhookurl…
When was CVE-2026-47356 disclosed?
CVE-2026-47356 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47356 actively exploited?
CVE-2026-47356 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 39.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47356?
CVE-2026-47356 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-47356?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47356, 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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