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

Quick assessment

Affected
opentofu opentofu
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

opentofu是opentofu组织的一款基础设施即代码工具。 opentofu 1.11.4之前版本存在资源管理错误漏洞，该漏洞源于tofu init命令处理恶意构造的.zip归档时存在拒绝服务漏洞，攻击者通过控制依赖安装期间提供的.zip归档内容，可能导致过度CPU使用，降低系统性能并阻止init过程及时完成。

CVSS 3.1 · Low EPSS 0.17% · P7

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
opentofu opentofu < 1.11.4 affected
1.11.4 unaffected
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I. Basic Information for CVE-2026-74797

Vulnerability Information
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Vulnerability Title
OpenTofu before 1.11.4 Denial of Service via malicious zip
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
opentofu 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
opentofu是opentofu组织的一款基础设施即代码工具。 opentofu 1.11.4之前版本存在资源管理错误漏洞，该漏洞源于tofu init命令处理恶意构造的.zip归档时存在拒绝服务漏洞，攻击者通过控制依赖安装期间提供的.zip归档内容，可能导致过度CPU使用，降低系统性能并阻止init过程及时完成。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
opentofu opentofu 0 ~ 1.11.4 -

II. Public POCs for CVE-2026-74797

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III. Intelligence Information for CVE-2026-74797

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Vendor Advisories for CVE-2026-74797 (1)

Same Patch Batch · opentofu · 2026-08-16 · 3 CVEs total

CVE-2024-58375 7.5 HIGH OpenTofu before 1.8.3 Secret Variable Leaking via Static Evaluation
CVE-2026-74796 6.1 MEDIUM OpenTofu before 1.11.7 Symlink Following Path Traversal

IV. Related Vulnerabilities

Same product: opentofu
Same vendor: opentofu
Same weakness: CWE-400

V. Comments for CVE-2026-74797

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