CVE-2026-110755

NameCVE-2026-110755
DescriptionText::CSV_XS versions before 1.65 for Perl allow quadratic CPU use by copying the unparsed remainder per record of CR-only input in getline. With eol unset, the default, getline reads with Perl's default line separator, so input with CR-only line endings arrives as one chunk. After each record the parser copies the whole unparsed remainder into a new buffer, which the next call parses and copies again, so the work grows with the square of the input size. A reader with default options that is sent CSV with classic Mac line endings spends seconds of CPU time on a megabyte of input.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1151096

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libtext-csv-xs-perl (PTS)bookworm, bookworm (security)1.49-1+deb12u1vulnerable
trixie1.60-1+deb13u1vulnerable
forky, sid1.64-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libtext-csv-xs-perlsource(unstable)(unfixed)1151096

Notes

https://lists.security.metacpan.org/cve-announce/msg/44408689/
Fixed by: https://github.com/cpan-authors/Text-CSV_XS/commit/f25e00aacd6fc15857b22487cb2e5ca263f377e0 (1.65)

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