CVE-2026-9538

7.5 HIGH
Published: May 26, 2026 Modified: May 28, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://metacpan.org/release/BINGOS/Archive-Tar-3.10/changes
Source: 9b29abf9-4ab0-4765-b253-1875cd9b441e
Release Notes
http://www.openwall.com/lists/oss-security/2026/05/26/4
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.4%
35th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

archive\