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CVE-2026-86320

Flatpak-builder: host code execution via `git am` hook execution in patch source extraction (`use-git-am`)

HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.29 % · percentile 21 ()
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Awaiting Analysis

Description

A flaw was found in flatpak-builder where Git hooks are not disabled when applying patch sources with use-git-am: true. An attacker who can provide a malicious source containing a Git post-applypatch hook can cause the hook to execute on the host during the build process, resulting in arbitrary code execution with the privileges of the user running flatpak-builder.

Weaknesses (CWE)

  • CWE-94 — Improper Control of Generation of Code

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hredhat
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HNVD · secalert@redhat.com (Secondary)

European references

Affected products

ProductVersions
Red Hat · Red Hat Enterprise Linux 10unaffected 0:1.4.4-1.el10_2.1 < *
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:1.4.4-1.el10_0.1 < *
Red Hat · Red Hat Enterprise Linux 8unaffected 0:1.2.3-2.el8_10 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 0:1.0.9-4.el8_6 < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 0:1.0.9-4.el8_6 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 0:1.0.14-3.el8_8 < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 0:1.0.14-3.el8_8 < *
Red Hat · Red Hat Enterprise Linux 9unaffected 0:1.2.3-1.el9_8.1 < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:1.2.2-2.el9_2 < *
Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:1.2.3-2.el9_4 < *
Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:1.2.3-1.el9_6.1 < *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD