What’s Vulnerable › Vulnerabilities

CVE-2026-107174: Source-to-image: source-to-image: security boundary bypass via absolute symbolic link extraction

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-07 · updated 2026-10-07
• Weakness: CWE-61

Description

A flaw was found in source-to-image. When unpacking archive files, the application fails to properly sanitize symbolic links pointing to absolute file paths. An attacker who supplies a malicious builder image can exploit this vulnerability by embedding links pointing outside the extraction directory. This allows the attacker to bypass sandbox boundaries, potentially leading to unauthorized information disclosure or file modification on the host system.

Affected products

• Red Hat OpenShift Container Platform 4.18: all versions
• Red Hat OpenShift Serverless: all versions
• Red Hat OpenShift Source-to-Image (S2I): all versions
• Red Hat Web Terminal: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-107174
• https://bugzilla.redhat.com/show_bug.cgi?id=2547419

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