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CVE-2026-15028

Libarchive: heap overflow oob read while parsing a tar archive contains a pax extended header

Low3.9EPSS 0.20%
Published
Updated
Reserved
Assigned by
redhat

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.

Scores

CVSS scores of CVE-2026-15028, by who scored it
Scored byCVSSScoreVector
redhatCNA (assigner)3.1Low3.9CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
NVDNVD · Awaiting Analysis3.1Low3.9CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
EPSS (exploitation in 30 days)
0.20% · top 90% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.9.

Weakness

Affected products

What to do

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.

References (7)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .