CVE-2026-110752: CWE-770 Allocation of Resources Without Limits or Throttling
Description
Text::CSV_XS versions before 1.65 for Perl contain a vulnerability where the fragment function allocates resources without limits or throttling. Specifically, it expands RFC 7111 selectors into large arrays without clamping the size, allowing memory exhaustion. This can cause the process to terminate with an out-of-memory error that cannot be caught by eval.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Text::CSV_XS (CVE-2026-110752) arises from the fragment function's handling of RFC 7111 selectors such as row= or col=. The function expands these selectors into arrays with one element per selected index before reading any data, but it does not limit the size of these arrays. For example, a selector like row=1-400000000 on a small file causes allocation of 400 million elements, leading to memory exhaustion. This flaw allows an attacker to supply crafted fragment selectors that cause the application to consume excessive memory and crash.
Potential Impact
An attacker can cause a denial of service by exhausting the application's memory, resulting in process termination with an out-of-memory error. This error cannot be caught or handled by eval, potentially leading to application instability or downtime.
Mitigation Recommendations
No official patch or fix is currently confirmed. Users should avoid passing untrusted or user-supplied fragment selectors directly to the fragment or csv functions in Text::CSV_XS versions before 1.65. Monitor vendor advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CPANSec
- Date Reserved
- 2026-10-14T17:05:46.947Z
- State
- PUBLISHED
Threat ID: 6ad2a6572cdf04f656423b10
Added to database: 10/16/2026, 22:33:59 UTC
Last enriched: 10/16/2026, 22:48:42 UTC
Last updated: 10/16/2026, 22:49:06 UTC
Views: 8
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