CVE-2026-47357
Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via the remote_url parameter in the remote directory scan endpoint (POST /v1/{iac}/{iacVersion}/{cloud}/remote/dir/scan) when running in server mode. An unauthenticated remote attacker can supply an attacker-controlled HTTP URL as remote_url with remote_type set to "http". The URL is passed directly to hashicorp/go-getter (v1.7.5) without validation. Go-getter's HttpGetter supports the X-Terraform-Get response header, allowing the attacker's server to redirect the download to a file:// URL, enabling local file read. Additionally, HttpGetter has Netrc set to true, causing it to read ~/.netrc and send stored credentials to attacker-controlled hostnames. 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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.3
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
- EPSS probability
- 0.48%
- CWE
- CWE-918, CWE-610, CWE-73
- Published
- 2026-05-19
- Last modified
- 2026-05-19
Affected products
- tenable Terrascan
Weakness type
Related vulnerabilities
- CVE-2026-88001 — Open WebUI: Server-side fetches reach blocked and internal hosts via unvalidated HTTP redirect targets
- CVE-2026-87999 — Open WebUI: Any authenticated user can reach the Azure platform channel via server-side web fetch
- CVE-2026-87996 — Open WebUI: SSRF into internal services via DNS rebinding in the Playwright web loader
- CVE-2026-19233 — CWE-918: Server-Side Request Forgery (SSRF) vulnerability exists that could cause unauthorized...
- CVE-2026-86771 — Snipe-IT before 8.7.0 Server-Side Request Forgery via employee_num
- CVE-2026-87821 — Lara Dashboard 0.9.2 through 1.3.1 Server-Side Request Forgery in Builder Markdown Fetch
- CVE-2026-79635 — Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to...
- CVE-2026-57866 — Apache Impala: Secrets Exfiltration via SSRF