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CVE-2026-50195— containerd: CRI checkpoint import allows local image tag poisoning

Quick assessment

Affected
containerd containerd
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.

containerd containerd是containerd团队的一款容器运行环境软件。 containerd存在安全漏洞，该漏洞源于CRI检查点导入过程中未能正确验证检查点镜像配置中的镜像引用，可能导致具有创建Pod权限的攻击者使用特制检查点镜像强制containerd拉取恶意镜像并分配任意本地标签，从而投毒节点本地镜像缓存，导致其他Pod无意中执行恶意镜像，进而导致受影响的Pod被破解，允许攻击者在受害Pod身份下执行任意代码。以下版本受到影响：2.3.2之前版本、2.2.5之前版本和2.1.9之

AI Predicted 8.4 Difficulty: Moderate EPSS 0.30% · P21

Affected Version Matrix 3

VendorProduct Version RangeStatus
containerd containerd >= 2.1.0, < 2.1.9 affected
>= 2.2.0, < 2.2.5 affected
>= 2.3.0, < 2.3.2 affected
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I. Basic Information for CVE-2026-50195

Vulnerability Information
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Vulnerability Title
containerd: CRI checkpoint import allows local image tag poisoning
Source: CVE Program / CVE List V5
Vulnerability Description
containerd is an open-source container runtime. Versions prior to 2.3.2, 2.2.5 and 2.1.9 contain a vulnerability in the CRI checkpoint import process where it fails to validate the image references specified within a checkpoint image's configuration. An attacker with permissions to create pods can use a crafted checkpoint image to force containerd to pull a malicious image and assign it an arbitrary local tag, thereby poisoning the node's local image cache. Subsequently, if other pods on the same node attempt to use the poisoned tag with an IfNotPresent (or Never) pull policy, they will unknowingly execute the attacker's malicious image instead of the legitimate one. This can lead to a compromise of the affected pods, allowing the attacker to execute arbitrary code under the victim pod's identity. This issue has been fixed in versions 2.3.2, 2.2.5 and 2.1.9.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
containerd 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
containerd containerd是containerd团队的一款容器运行环境软件。 containerd存在安全漏洞，该漏洞源于CRI检查点导入过程中未能正确验证检查点镜像配置中的镜像引用，可能导致具有创建Pod权限的攻击者使用特制检查点镜像强制containerd拉取恶意镜像并分配任意本地标签，从而投毒节点本地镜像缓存，导致其他Pod无意中执行恶意镜像，进而导致受影响的Pod被破解，允许攻击者在受害Pod身份下执行任意代码。以下版本受到影响：2.3.2之前版本、2.2.5之前版本和2.1.9之
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
containerd containerd >= 2.1.0, < 2.1.9 -

II. Public POCs for CVE-2026-50195

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III. Intelligence Information for CVE-2026-50195

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Vendor Advisories for CVE-2026-50195 (1)

Same Patch Batch · containerd · 2026-07-01 · 6 CVEs total

CVE-2026-53488 containerd CRI plugin: — image-config `LABEL` flows to restart-monitor `binary://` logger:
CVE-2026-53489 containerd: Arbitrary host CRI log file read via symlink following in CRI checkpoint resto
CVE-2026-53492 containerd CRI checkpoint restore CDI annotation smuggling
CVE-2026-47262 containerd image-triggered runtime DoS via unbounded group parsing
CVE-2026-46680 containerd user ID handling bypass allows runAsNonRoot evasion

IV. Related Vulnerabilities

Same product: containerd
Same vendor: containerd
Same weakness: CWE-345

V. Comments for CVE-2026-50195

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