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CVE-2026-110756                                      CPAN Security Group
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        CVE ID:  CVE-2026-110756

  Distribution:  Text-CSV_XS
      Versions:  before 1.65
      MetaCPAN:  https://metacpan.org/dist/Text-CSV_XS
      VCS Repo:  https://github.com/cpan-authors/Text-CSV_XS

Text::CSV_XS versions before 1.65 for Perl drop the end of a record and
its line ending when a UTF-8 flagged field precedes invalid UTF-8 bytes
in print

Description
-----------
Text::CSV_XS versions before 1.65 for Perl drop the end of a record and
its line ending when a UTF-8 flagged field precedes invalid UTF-8 bytes
in print.

When a record contains a UTF-8 flagged field, print holds back trailing
bytes that are not valid UTF-8 at each buffer flush, so that a
character split across two flushes can be completed. Nothing writes the
held-back bytes after the record's final flush. A record whose last
field ends in such a byte loses it, any closing quote and the line
ending, while print still returns true. combine is not affected.

The next record is written onto the same line, or, when the last field
was quoted, the missing closing quote makes a reader take every
following record as part of that field.

Problem types
-------------
- CWE-116 Improper Encoding or Escaping of Output

Solutions
---------
Upgrade to Text-CSV_XS 1.65 or later.

References
----------
https://github.com/cpan-authors/Text-CSV_XS/commit/0610a8d81262ae6f1ac82a88d73c8a471f38af19.patch
https://metacpan.org/release/HMBRAND/Text-CSV_XS-1.65/changes

Timeline
--------
- 2026-10-14: Fix committed to upstream repository.
- 2026-10-15: Version 1.65 released with fix.