Vulnerability · Published Aug 16, 2026 · Assigned by VulnCheck

CVE-2026-74797OpenTofu before 1.11.4 Denial of Service via malicious zip

Low 3.1

In plain English

A low-severity uncontrolled resource consumption in opentofu from opentofu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.1Low

Exploit odds (30 days)0.3%top 79.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenTofu versions before 1.11.4 contain a denial of service vulnerability in the tofu init command when processing maliciously-crafted .zip archives for provider or module packages. Attackers can cause excessive CPU usage by controlling .zip archive content served during dependency installation, degrading system performance and preventing timely completion of the init process.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/opentofu/opentofu	1.11.4	GHSA-r92c-9c7f-3pj8
Go	github.com/opentofu/opentofu	1.11.4	GO-2026-4352

Affected products (as reported)

Vendor	Product	Versions
opentofu	opentofu	0 – before 1.11.4

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

References

GitHub Security Advisory (GHSA-r92c-9c7f-3pj8) vendor-advisory
VulnCheck Advisory: OpenTofu before 1.11.4 Denial of Service via malicious zip third-party-advisory