VulnTideExploited vulnerabilities, by vendor. Data as of .
Not in CISA KEVPublished CVSS 6.1 mediumEPSS 0.2% probability of exploitation in 30 daysFound by AI: AISLE
Red Hat

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

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?
0.2%

EPSS score, percentile 8.8 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?
6.1 Medium

CVSS v3.1 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Versions by product

Source: CISA KEV 2026.10.29, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.

What to do

Workaround (from the CVE record)

If Flatpak packaging is not required on the system, remove the flatpak-builder package to eliminate exposure: # dnf remove flatpak-builder For development environments and continuous integration pipelines where flatpak-builder is necessary, apply the following operational controls: 1. Avoid processing build manifests from untrusted or unverified third-party sources. 2. Execute builds within isolated, ephemeral container or virtual machine environments where sensitive host files and credentials are not mounted or accessible. 3. Implement pre-build pipeline checks to reject manifests containing `file://` URI schemes in `type: file` or `type: archive` source definitions.

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

As listed in the CVE record.

Red Hat Red Hat Enterprise Linux 10
StatusVersions

Versions not listed are: affected.

Red Hat Red Hat Enterprise Linux 8
StatusVersions

Versions not listed are: affected.

Red Hat Red Hat Enterprise Linux 9
StatusVersions

Versions not listed are: affected.

Source: CVE List, as of . About the data.

About this vulnerability

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…

Summary: CVE record, as of .

  • CISA has not added CVE-2026-107466 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
  • The CVE record was published on 8 Oct 2026.
  • The CVE record carries a CVSS v3.1 base score of 6.1 (Medium), given by its CNA.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.2% (percentile 8.8), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
  • CISA's SSVC assessment in the CVE record: exploitation none, automatable no, technical impact partial.
  • The credits in the CVE record name AISLE as finder.

Source: CISA KEV 2026.10.29, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.

Description

Flatpak-builder: local file exfiltration via `file

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 List, as of . About the data.

Weakness

CWE-22

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

DateEvent
CVE record published

References

2

Known exploited Red Hat vulnerabilities

  • CVE-2015-3246: Red Hat Libuser Race Condition Vulnerability (added )
  • CVE-2015-5287: Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability (added )
  • CVE-2018-14667: Red Hat JBoss RichFaces Framework Expression Language Injection Vulnerability (added )
  • CVE-2021-3560: Red Hat Polkit Incorrect Authorization Vulnerability (added )
  • CVE-2021-4034: Red Hat Polkit Out-of-Bounds Read and Write Vulnerability (added )