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CVE-2026-107466— Flatpak-builder: local file exfiltration via `file

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
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 flatpak-builder 中发现了一个漏洞。该漏洞允许攻击者通过诱使用户或持续集成（CI）系统处理一个精心构造的构建清单，从而导致信息泄露。通过在源码下载定义中指定本地文件统一资源标识符（URIs），构建工具能够绕过目录隔离检查。结果是，构建进程可访问的敏感主机文件可能被读取并包含到构建产物中。

CVSS 6.1 · Medium

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-107466

Vulnerability Information
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Vulnerability Title
Flatpak-builder: local file exfiltration via `file
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-107466

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III. Intelligence Information for CVE-2026-107466

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Other References for CVE-2026-107466 (2)

Same Patch Batch · Red Hat · 2026-10-08 · 3 CVEs total

CVE-2026-107445 5.4 MEDIUM Rubygem-katello: katello flatpak remote repositories api cross-organization authorization
CVE-2026-107444 4.3 MEDIUM Rubygem-katello: katello docker tags repositories api cross-organization authorization byp

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-22

V. Comments for CVE-2026-107466

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