CVE-2026-74797
LowCVSS 3.1Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
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.
Risk Assessment
The risk is disruption of services, potentially leading to unavailability of systems managed by OpenTofu. The attack can be performed remotely if the attacker can control the package source.
Recommendation
It is recommended to upgrade OpenTofu to version 1.11.4 or later, which includes the fix. Also limit trust in package sources and use integrity verification mechanisms for archives.
Other vulnerabilities in OpenTofu
See all- CVE-2026-74796Medium
OpenTofu before 1.11.7 fails to validate existing symlinks in the provider cache directory during initialization. Attackers can place a malicious symlink in a trusted working directory to cause tofu init to write provider package contents to arbitrary filesystem locations outside the working tree.
- CVE-2024-58375High
OpenTofu versions 1.8.0 through 1.8.2 do not properly restrict sensitive variables and locals when users have opted into static evaluation of module sources, versions, and backend configurations. As a result, values marked as sensitive may be exposed through these configuration elements instead of producing an error. This is fixed in OpenTofu 1.8.3, which adds explicit errors to prevent the use of sensitive values in these contexts.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS