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Back to active CVEs
Low · CVSS 3.9CVE-2026-15028

Libarchive: heap overflow oob read while parsing a tar archive contains a pax extended headerCVE-2026-15028

Answer in brief

CVE-2026-15028 records a Low severity (CVSS 3.9) vulnerability in Libarchive: heap overflow oob read while parsing a tar archive contains a pax extended header. The current sources do not mark it as known exploited. The current feed maps Red Hat/libarchive (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 10, 2026Updated Nov 2, 2026Source checked Nov 3, 2026First seen by HOL Jul 10, 2026Material review Nov 2, 2026
Upstream Advisory

Record context

Vulnerability class
RCE
EPSS
Not reported
CWE IDs
CWE-122, CWE-805
Source
CVE List V5
Source checked
Nov 3, 2026
References
7 linked sources
Open source record

Key facts

Risk
Low · CVSS 3.9
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 3.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/libarchive (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/libarchivegeneric*Not reported
Red Hat/openshift/ose-rhel-coreos-9generic*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/libarchive, Red Hat/openshift/ose-rhel-coreos-9.
  2. 2Review the reported fix. Source-reported workaround: To mitigate this issue, avoid processing untrusted or unverified tar archives. Users should exercise caution when handling archives from unknown sources or those with unexpected content, as processing a specially crafted archive could trigger the vulnerability.

Evidence timeline and material changes

  1. Published upstream

    Jul 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jul 10, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.