CVE-2026-9538: Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header
Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/perlto a version that resolves this vulnerability.Fixed in 5.42.3-1 - Upgrade
Upgrade
Archive::Tarto a version that resolves this vulnerability.Fixed in 3.10
Event History
Frequently Asked Questions
What is the severity of CVE-2026-9538?
CVE-2026-9538 has a risk score of 28, indicating a moderate to high severity level.
How do I fix CVE-2026-9538?
To fix CVE-2026-9538, upgrade to Archive::Tar version 3.10 or later.
What is the impact of CVE-2026-9538?
CVE-2026-9538 allows for memory exhaustion through controlled entry size fields in the tar header, potentially leading to denial of service.
Which versions of Archive::Tar are affected by CVE-2026-9538?
Archive::Tar versions prior to 3.10 are affected by CVE-2026-9538.
Who is affected by CVE-2026-9538?
Anyone using Archive::Tar versions before 3.10 in their Perl applications may be affected by CVE-2026-9538.