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CVE-2026-110752— Text::CSV_XS versions before 1.65 for Perl allow memory exhaustion by allocating one entry per index of an RFC 7111 selector in fragment

Quick assessment

Affected
CVE-2026-110752
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.

在 Perl 中，Text::CSV_XS 1.65 之前的版本存在内存耗尽漏洞。该漏洞源于在处理 RFC 7111 选择器（selector）的片段（fragment）时，会为每个索引预先分配一个条目。 具体而言， 函数在读取任何数据之前，就会将 或 选择器扩展为一个数组，其中每个被选中的索引对应一个元素；同时，它不会将 选择器中显式指定的结束列限制在当前行的范围内。该函数仅验证选择器范围语法的正确性和顺序，因此，即使文件仅有两行，使用 这样的选择器也会预先分配 4 亿个元素。 若应用程序将来自请求的片段直接传递

AI Predicted 5.9 Difficulty: Easy EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
None None < 1.65 affected

I. Basic Information for CVE-2026-110752

Vulnerability Information
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Vulnerability Title
Text::CSV_XS versions before 1.65 for Perl allow memory exhaustion by allocating one entry per index of an RFC 7111 selector in fragment
Source: CVE Program / CVE List V5
Vulnerability Description
Text::CSV_XS versions before 1.65 for Perl allow memory exhaustion by allocating one entry per index of an RFC 7111 selector in fragment. fragment expands a row= or col= selector into an array with one element per selected index before it reads any data, and it does not clamp an explicit end column in a cell= selector to the row. Only the syntax and order of the ranges are checked, so row=1-400000000 on a two-line file allocates 400 million elements. An application that passes a request-supplied fragment to fragment or csv can be made to exhaust memory, which ends the process with an Out of memory error that eval cannot catch.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 1.65 -

II. Public POCs for CVE-2026-110752

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III. Intelligence Information for CVE-2026-110752

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Patches & Fixes for CVE-2026-110752 (1)

Other References for CVE-2026-110752 (1)

IV. Related Vulnerabilities

Same weakness: CWE-770

V. Comments for CVE-2026-110752

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