CVE-2026-47358: Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via external URL resolution i

Q: How do I fix CVE-2026-47358?

terrascan: upgrade to newer than 1.18.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-47358 being exploited?

CVE-2026-47358 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-47358 affect?

CVE-2026-47358 affects terrascan. Severity is high (CVSS 7.5). Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via external URL resolution in uploaded IaC templates when running in server mode. When Terrascan parses uploaded ARM templates or CloudFormation templates, it

Q: How urgent is CVE-2026-47358?

Priority 42/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2026-47358 is a high-severity flaw (CVSS 7.5) affecting terrascan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via external URL resolution in uploaded IaC templates when running in server mode. When Terrascan parses uploaded ARM templates or CloudFormation templates, it resolves external URLs referenced within those templates via hashicorp/go-getter with all default detectors enabled, including FileDetector. An unauthenticated remote attacker can upload an ARM template contai

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-73, CWE-610, CWE-918
Published	2026-05-19
Last modified	2026-07-24

Publisher (CNA): Tenable Network Security, Inc. · Vendor: tenable

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-19 17:16 UTCPublished CVE record published
2026-07-24 12:10 UTCUpdated Record last modified

tenable terrascan UPGRADE

Affected: <= 1.18.3

Fixed in: newer than 1.18.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy terrascan || rpm -q terrascan || terrascan --version

2. UPGRADE to newer than 1.18.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade terrascan

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade terrascan

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-47358?

terrascan: upgrade to newer than 1.18.3. Exact commands for each OS are on this page.

Is CVE-2026-47358 being exploited?

CVE-2026-47358 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-47358 affect?

CVE-2026-47358 affects terrascan. Severity is high (CVSS 7.5). Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via external URL resolution in uploaded IaC templates when running in server mode. When Terrascan parses uploaded ARM templates or CloudFormation templates, it

How urgent is CVE-2026-47358?

Priority 42/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-47356 HIGH 7.5 UPGRADE Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via the webhook_url parameter
CVE-2026-47357 HIGH 7.5 UPGRADE Terrascan v1.18.3 and prior are vulnerable to Server-Side Request Forgery (SSRF) via the remote_url parameter

References

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