# CVE-2026-74797 — opentofu

> As of 2026-08-17, CVE-2026-74797 is a LOW-severity vulnerability in opentofu, CVSS v3.1 3.1, EPSS 0.1% (7.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-74797 as of 2026-08-17; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-17

## What is CVE-2026-74797?

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.

The record classifies CVE-2026-74797 under weakness class [CWE-400](https://intel.threadlinqs.com/cwe/CWE-400). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 50 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 3.1 — LOW (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L`)
- **CVSS v4.0 base score:** 2.3 (`CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 7.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 1.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-16, last modified 2026-08-17

## Is CVE-2026-74797 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **opentofu**: opentofu

## How to fix CVE-2026-74797

No vendor patch reference has been recorded for CVE-2026-74797 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-74797

No threat campaign in the Threadlinqs corpus currently references CVE-2026-74797, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-08-17.

**Vendor advisory and patch**

- [github.com — vendor advisory](https://github.com/opentofu/opentofu/security/advisories/GHSA-r92c-9c7f-3pj8)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/opentofu-before-denial-of-service-via-malicious-zip)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-74797
Full detection coverage and IOCs for threats exploiting CVE-2026-74797 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp