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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-110756
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-16 23:17:00 UTC
Updated2026-10-16 23:17:00 UTC
DescriptionText::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.

Risk And Classification

Problem Types: CWE-116 | CWE-116 CWE-116 Improper Encoding or Escaping of Output

References

ReferenceSourceLinkTags
github.com/cpan-authors/Text-CSV_XS/commit/0610a8d81262ae6f1ac82a88d73c8... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
metacpan.org/release/HMBRAND/Text-CSV_XS-1.65/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2026-10-14T00:00:00.000ZFix committed to upstream repository.
CNA2026-10-15T00:00:00.000ZVersion 1.65 released with fix.

Solutions

CNA: Upgrade to Text-CSV_XS 1.65 or later.

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