Bug 2517222 (CVE-2026-74797)

Summary: CVE-2026-74797 github.com/opentofu/opentofu: OpenTofu: Denial of Service via malicious zip archives
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in OpenTofu. A remote attacker could exploit this vulnerability by providing maliciously-crafted .zip archives during the `tofu init` command, which is used for provider or module package initialization. This could lead to excessive CPU usage, causing a Denial of Service (DoS) by degrading system performance and preventing the completion of the initialization process.
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Bug Depends On: 2517748    
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Description OSIDB Bzimport 2026-08-16 13:31:51 UTC
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.