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TI-2026-08380 Aliases CVE-2026-9538GHSA-rrh7-4pj2-xxq8

Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker…

Priority LOW 39CWE-789Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 4 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-789.

Summary

Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header. _read_tar() reads each entry's payload with $handle->read($$data, $block), where $block is derived from the entry's 12-byte size field in the tar header with no upper bound on that value. A crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00517 44th percentileScored 2026-11-07
Fix Partial Archive::Tar (BINGOS): 3.10Red Hat: 4 advisoriesRed Hat: 4 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
BINGOSArchive::Tarbefore 3.103.10Patch availableCNA
  • Archive::Tar VendorBINGOS Affected before 3.10 Fixed in 3.10 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:archive\:\:tar_project:archive\:\:tar:*:*:*:*:*:perl:*:*tar_project archive\VulnerableBINGOS
  • cpe:2.3:a:archive\:\:tar_project:archive\:\:tar:*:*:*:*:*:perl:*:* Versions tar_project archive\ Vulnerable ·BINGOS

Remediation

  • Fix · CNA Archive::Tar (BINGOS) Fixed in 3.10

Red Hat 4 advisories

  • RHSA-2026:49523 Released 2026-08-03 · Red Hat rating Important
    perl-Archive-Tar security update
    • Red Hat Enterprise Linux AppStream (v. 10) perl-Archive-Tar-3.02-512.el10_2.2
  • RHSA-2026:49525 Released 2026-08-03 · Red Hat rating Important
    perl-Archive-Tar security update
    • Red Hat Enterprise Linux AppStream (v. 9) perl-Archive-Tar-2.38-6.el9_8.2
  • RHSA-2026:49524 Released 2026-08-03 · Red Hat rating Important
    perl-Archive-Tar security update
    • Red Hat Enterprise Linux BaseOS (v. 8) perl-Archive-Tar-2.30-3.el8_10
Show 1 more Red Hat advisories
  • RHSA-2026:48225 Released 2026-07-30 · Red Hat rating Important
    perl:5.32 security update
    • Red Hat Enterprise Linux AppStream (v. 8) perl-4:5.32.1-474.module+el8.10.0+24099+8aa2f756.aarch64::perl:5.32, perl-4:5.32.1-474.module+el8.10.0+24099+8aa2f756.ppc64le::perl:5.32, perl-4:5.32.1-474.module+el8.10.0+24099+8aa2f756.s390x::perl:5.32 +47

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:49523
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:48225
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:49525
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:49524

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9538
  2. 2026-10-03 Alias added: GHSA-rrh7-4pj2-xxq8

References

Patch 1

Advisory 1

Other 1

  • TI-2026-30779 Link following in BINGOS Archive::Tar CVSS 3.1CRITICAL 9.1
  • TI-2018-08610 In Perl through 5.26.2, the Archive::Tar module allows remote attackers to bypass a… CVSS 3.0HIGH 7.5
  • TI-2026-30780 Link following in BINGOS Archive::Tar CVSS 3.1HIGH 7.5
  • TI-2007-04673 Directory traversal vulnerability in the Archive::Tar Perl module 1.36 and earlier allows… CVSS 2.0MEDIUM 6.8

Sources

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