GHSA-w2jf-268q-mrvh: github.com/opentofu/opentofu

Package	Ecosystem	Affected	Fixed in
github.com/opentofu/opentofu	Go	<1.10.7	1.10.7

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

OpenTofu versions before 1.10.7 are vulnerable to denial of service during "tofu init" when it installs modules or providers from attacker-controlled sources. An unauthenticated attacker who controls a TLS certificate chain or a module tar archive can cause excessive memory use, high CPU use, or a crash, but cannot execute code or disclose data. Upgrade to OpenTofu 1.10.7. For older 1.9 and 1.8 releases, which have no fix, review new dependencies before adding them to the configuration.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
3.1	Low	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L	GitHub Advisory Database

CISA KEV Not listed.
EPSS No score.

Timeline

31 Oct 2026, 14:14 UTC First seen by agentprime
31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.