CVE-2026-107466

Status: Awaiting AnalysisMedium (6.1)—

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.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Base score: 6.1

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.19%
Percentile among all scored CVEs: 8
Score date: 10/13/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1203 Exploitation for Client Executionexecution85 %
Primary impactT1005 Data from Local Systemcollection90 %
Secondary impactT1552 Unsecured Credentialscredential access75 %

AV:L + UI:R indica ejecución en cliente (manifesto preparado); acceso a ficheros locales y credenciales potenciales en artefactos de compilación.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Update Software Active Directory Configuration User Training Restrict File and Directory Permissions Privileged Account Management Password Policies

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Flatpak — Flatpak-builder^AI

CWEs

CWE-22

References

Raw JSON (NVD)

Show

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  "lastModified": "2026-10-08T20:49:23.240",
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