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CVE-2026-9538— Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header

Quick assessment

Affected
BINGOS Archive::Tar
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

archive-tar-new是Jos Boumans个人开发者的一个Perl模块，用于创建和内存操作tar文件。 archive-tar-new 3.10之前版本存在安全漏洞，该漏洞源于_read_tar函数读取tar标头中攻击者控制的条目大小字段时未设置上限，可能导致内存耗尽。

AI Predicted 7.5 Difficulty: Easy EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
BINGOS Archive::Tar < 3.10 affected
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I. Basic Information for CVE-2026-9538

Vulnerability Information
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Vulnerability Title
Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
archive-tar-new 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
archive-tar-new是Jos Boumans个人开发者的一个Perl模块，用于创建和内存操作tar文件。 archive-tar-new 3.10之前版本存在安全漏洞，该漏洞源于_read_tar函数读取tar标头中攻击者控制的条目大小字段时未设置上限，可能导致内存耗尽。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
BINGOS Archive::Tar 0 ~ 3.10 -

II. Public POCs for CVE-2026-9538

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III. Intelligence Information for CVE-2026-9538

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Patches & Fixes for CVE-2026-9538 (1)

Vendor Pages for CVE-2026-9538 (1)

Same Patch Batch · BINGOS · 2026-05-26 · 3 CVEs total

CVE-2026-42497 Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths
CVE-2026-42496 Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targe

IV. Related Vulnerabilities

Same product: Archive::Tar
Same vendor: BINGOS
Same weakness: CWE-789

V. Comments for CVE-2026-9538

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