CVE-2026-111943

0.0

Distrust compromised intermediate certificates in crypto/x509

Overview
Vulnerability Timeline

Overview

Description

On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.

Details

INFO

Published Date :

Oct. 21, 2026, 1:17 a.m.

Last Modified :

Oct. 21, 2026, 2:17 a.m.

Remotely Exploit :

No

Source :

[email protected]

Impact

Affected Products

The following products are affected by CVE-2026-111943 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID	Vendor	Product	Action
1	Golang	go

: Total Affected Vendor : 1 | Products : 1

Solution

Update Go to include security patches for certificate trust store validation.

Update your Go version to the latest.
Ensure system trust stores are updated.
Apply the crypto/x509 denylist patch.

References

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-111943.

URL	Resource
https://go.dev/cl/851047
https://go.dev/issue/82345
https://groups.google.com/g/golang-announce/c/66pojueaQek
https://pkg.go.dev/vuln/GO-2026-6809
http://www.openwall.com/lists/oss-security/2026/10/20/29

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-111943 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-111943 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-111943 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-111943 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

CVE Modified by af854a3a-2127-422b-91ae-364da2661108

Oct. 21, 2026

Action	Type	Old Value	New Value
Added	Reference		http://www.openwall.com/lists/oss-security/2026/10/20/29

New CVE Received by [email protected]