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

Quick assessment

Affected
Red Hat OpenShift Serverless
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 Source-to-Image（S2I）工具中发现了一个漏洞。在解压归档文件时，该应用程序未能正确清理指向绝对文件路径的符号链接。攻击者可以通过提供一个恶意构建器镜像，在其中嵌入指向提取目录之外的链接，从而利用此漏洞。这使得攻击者能够绕过沙箱限制，可能导致在主机系统上发生未经授权的信息泄露或文件修改。

CVSS 6.4 · Medium

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection
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I. Basic Information for CVE-2026-107174

Vulnerability Information
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Vulnerability Title
Source-to-image: source-to-image: security boundary bypass via absolute symbolic link extraction
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-61
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Serverless - cpe:/a:redhat:serverless:1
Red Hat OpenShift Source-to-Image (S2I) - cpe:/a:redhat:source_to_image:1
Red Hat OpenShift Source-to-Image (S2I) - cpe:/a:redhat:source_to_image:1
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 Web Terminal - cpe:/a:redhat:webterminal:1

II. Public POCs for CVE-2026-107174

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III. Intelligence Information for CVE-2026-107174

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Other References for CVE-2026-107174 (2)

Same Patch Batch · Red Hat · 2026-10-07 · 13 CVEs total

CVE-2026-106471 8.1 HIGH Candlepin: candlepin: broken object-level authorization via verifyauthorizationfilter mult
CVE-2026-107121 6.5 MEDIUM Keycloak-services: keycloak-services: smtp starttls plaintext credential and message downg
CVE-2026-103869 6.5 MEDIUM Pulp-ansible: bearer tokens are reused across remotes in a worker
CVE-2026-103868 6.5 MEDIUM Pulp-container: registry credentials are reused across remotes in a worker
CVE-2026-106064 6.3 MEDIUM Gimp: gimp: heap buffer overflow in gif export on oversized image dimensions
CVE-2026-107169 6.2 MEDIUM M17n-lib: null-pointer write in read_mtext_element() on malformed utf-8
CVE-2026-107167 6.2 MEDIUM M17n-lib: heap use-after-free write in re_init_ic()
CVE-2026-107168 6.2 MEDIUM M17n-lib: parser infinite loop on malformed utf-8 in count_utf_8_chars()
CVE-2026-107151 5.9 MEDIUM Rubygem-smart_proxy_dynflow: task update and done callbacks accept unauthenticated request
CVE-2026-106061 5.5 MEDIUM Gimp: gimp: heap buffer over-read in x cursor (xmc) thumbnail loader on crafted file
CVE-2026-103870 5.0 MEDIUM Pulp-rpm: distribution tree publish creates directories from .treeinfo ids
CVE-2026-107170 2.9 LOW M17n-lib: null dereference in minput_open_im() after failed m17n_init()

IV. Related Vulnerabilities

Same vendor: Red Hat
Same weakness: CWE-61

V. Comments for CVE-2026-107174

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