CVE-2026-47356

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 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/tenable/terrascan	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:tenable:terrascan:*:*:*:*:*:*:*:*

History

20 May 2026, 14:23

Type	Values Removed	Values Added
CPE		cpe:2.3:a:tenable:terrascan::::::::
References	~~() https://github.com/tenable/terrascan -~~	() https://github.com/tenable/terrascan - Product
First Time		Tenable Tenable terrascan

19 May 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-19 17:16

Updated : 2026-05-20 14:23

NVD link : CVE-2026-47356

Mitre link : CVE-2026-47356

CVE.ORG link : CVE-2026-47356

JSON object : View

Products Affected

tenable

terrascan

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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