Is CVE-2026-47356 actively exploited?

No active exploitation of CVE-2026-47356 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-47356 be exploited remotely?

Yes. CVE-2026-47356 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-47356?

CVE-2026-47356 has a CVSS score of 8.6 (HIGH).

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HIGH

CVE-2026-47356

CWE-918Published: May 19, 2026· Updated: May 20, 2026

8.6

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.0th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-47356 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.