---
id: CVE-2026-15028
title: A flaw was found in libarchive
summary: >-
  A flaw was found in libarchive. This vulnerability allows a remote attacker to
  trigger a heap overflow by providing a specially crafted tar archive. The
  issue occurs during the parsing of a PAX extended header containing a
  malformed SUN.…
severity: low
cvss: 3.9
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L'
cwe:
  - CWE-805
  - CWE-122
vendor: Red Hat
product: libarchive
affected:
  - libarchive (all versions)
  - libarchive-main (all versions)
  - libarchive
  - libarchive
  - libarchive
  - libarchive (all versions)
  - openshift/ose-rhel-coreos-9 (all versions)
patched:
  - hardened_images
published: '2026-07-10'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T00:16:31.827'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15028'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:38279'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:69553'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-15028'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2497970'
    label: secalert@redhat.com
  - url: 'https://github.com/libarchive/libarchive/issues/3251'
    label: secalert@redhat.com
  - url: 'https://github.com/libarchive/libarchive/pull/3253'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-15028.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-15028'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15028'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-07-11T03:55:16.953417Z'
epss: 0.00204
epssPercentile: 0.10662
ingestedAt: '2026-07-11T20:15:25.985Z'
---

## Overview

A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:38279** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-07-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:38279)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-15028.json)
- **RHSA-2026:69553** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69553)