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CVE-2026-76061— Cri-o: cri-o: bind_mount_prefix intermediate-symlink prefix bypass

Quick assessment

Affected
CVE-2026-76061
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.

在 CRI-O 的 处理逻辑中发现了一个漏洞。当配置为非空的 时，恶意容器或本地攻击者可以利用包含中间绝对符号链接的 Container Runtime Interface (CRI) hostPath。这可能导致绑定挂载源解析到预期的前缀根目录之外，从而可能引发对主机系统上文件的未授权访问或权限提升。

CVSS 5.5 · Medium

Possible ATT&CK Techniques 1 AI

T1611 · Escape to Host

Affected Version Matrix 3

VendorProduct Version RangeStatus
Red Hat Red Hat OpenShift Container Platform 4 any affected
any affected
any affected

I. Basic Information for CVE-2026-76061

Vulnerability Information
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Vulnerability Title
Cri-o: cri-o: bind_mount_prefix intermediate-symlink prefix bypass
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in CRI-O's `bind_mount_prefix` handling. When configured with a non-empty `bind_mount_prefix`, a malicious container or local attacker could use a Container Runtime Interface (CRI) hostPath containing an intermediate absolute symlink. This could cause the bind mount source to resolve outside the intended prefixed root, potentially leading to unauthorized access to files or privilege escalation on the host system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 1.34.14 -
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-76061

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-76061

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Other References for CVE-2026-76061 (5)

IV. Related Vulnerabilities

Same weakness: CWE-59

V. Comments for CVE-2026-76061

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