CVE-2026-46680

7.8

HIGH CVSS 3.1

containerd user ID handling bypass allows runAsNonRoot evasion

Overview

Description

containerd is an open-source container runtime. In versions prior to 1.7.32, 2.0.9, 2.2.4 and 2.3.1, containers launched with a numeric User directive that cannot be parsed as a 32-bit integer are incorrectly treated as a username, leading to runAsNonRoot evasion. If a crafted image provides an /etc/passwd file mapping this large numeric string to root, the container ultimately runs as root (UID 0). This allows the Kubernetes runAsNonRoot restriction to be bypassed, causing unexpected behavior for environments that require containers to run as a non-root user. This issue has been fixed in versions 1.7.32, 2.0.9, 2.2.4 and 2.3.1.

Details

INFO

Published Date :

July 1, 2026, 6:16 p.m.

Last Modified :

July 3, 2026, 4:17 a.m.

Remotely Exploit :

No

Source :

[email protected]

Impact

Affected Products

The following products are affected by CVE-2026-46680 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	Linuxfoundation	containerd

: Total Affected Vendor : 1 | Products : 1

Scoring

CVSS Scores

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Version	Severity	Source
CVSS		134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1	HIGH	[email protected]
CVSS 4.0	HIGH	[email protected]

Solution

Update containerd to a fixed version to prevent runAsNonRoot evasion and unintended root execution.

Update containerd to version 1.7.32 or later.
Update containerd to version 2.0.9 or later.
Update containerd to version 2.2.4 or later.
Update containerd to version 2.3.1 or later.

Public PoC/Exploit Available at Github

CVE-2026-46680 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

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-2026-46680.

URL	Resource
https://github.com/containerd/containerd/security/advisories/GHSA-fqw6-gf59-qr4w	Mitigation Vendor Advisory

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-46680 is associated with the following CWEs:

CWE-269: Improper Privilege Management

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-2026-46680 weaknesses.

CAPEC-58: Restful Privilege Elevation Restful Privilege Elevation CAPEC-122: Privilege Abuse Privilege Abuse CAPEC-233: Privilege Escalation Privilege Escalation

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).

liamromanis101/K8s-container_escape_audit

Look for possible escape vectors from a container

aws azure cicd devsecops docker kubernetes kubernetes-security cve-scanning kernel-hardening kernel-security container-security linux linux-kernel

Shell

Updated: 6 days, 3 hours ago

6 stars 0 fork 0 watcher

Born at : April 16, 2026, 9:50 a.m. This repo has been linked 43 different CVEs too.

ssst0n3/ssst0n3

None

Updated: 5 days, 8 hours ago

2 stars 0 fork 0 watcher

Born at : Nov. 27, 2025, 9:55 a.m. This repo has been linked 12 different CVEs too.

nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 2 days, 23 hours ago

7922 stars 1275 fork 1275 watcher

Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 646 different CVEs too.

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

The following list is the news that have been mention CVE-2026-46680 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-2026-46680 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 134c704f-9b21-4f2e-91b3-4a467353bcc0

Jul. 03, 2026

Action	Type	Old Value	New Value
Changed	SSVC	{'id': 'CVE-2026-46680', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-02T12:51:36.901120Z'}	{'id': 'CVE-2026-46680', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-02T00:00:00+00:00'}

Initial Analysis by [email protected]

Jul. 02, 2026

Action	Type	New Value
Added	CVSS V3.1	AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Added	CPE Configuration	OR cpe:2.3:a:linuxfoundation:containerd::::::::* versions from (including) 1.7.27 up to (excluding) 1.7.32 cpe:2.3:a:linuxfoundation:containerd::::::::* versions from (including) 2.0.4 up to (excluding) 2.0.9 cpe:2.3:a:linuxfoundation:containerd::::::::* versions from (including) 2.1.0 up to (excluding) 2.2.4 cpe:2.3:a:linuxfoundation:containerd::::::::* versions from (including) 2.3.0 up to (excluding) 2.3.1
Added	Reference Type	GitHub, Inc.: https://github.com/containerd/containerd/security/advisories/GHSA-fqw6-gf59-qr4w Types: Mitigation, Vendor Advisory