CVEvulnerability
CVE-2026-9538
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-05-26
- Last modified
- 2026-07-23
- Assigner
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-789
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.
Affected configurations
• archive\ \ tar project (< 3.10)
Related
Weakness · CWE (1)
- CWE-789 Memory Allocation with Excessive Size Value weakness
References
- https://github.com/jib/archive-tar-new/commit/f9af01426038e29d9578825a0cd3626946ab08c7.patch Patch
- https://metacpan.org/release/BINGOS/Archive-Tar-3.10/changes Release Notes
- http://www.openwall.com/lists/oss-security/2026/05/26/4 Mailing List, Third Party Advisory