CVE-2026-110757 Text::CSV_XS versions before 1.65 for Perl allow record splitting by writing strings used as numbers without quotes in combine.
Attackers can inject newlines into numeric fields to split CSV records, corrupting data integrity in applications using Text::CSV_XS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-110757?
CVE-2026-110757 is a critical vulnerability, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Text::CSV_XS versions before 1.65 for Perl allow record splitting by writing strings used as numbers without quotes in combine.
combine and print do not check whether a field needs quotes when its value has Perl's integer or numeric flag set. Perl sets these flags on a string used in a numeric operation when it parses as a number, which allows leading and trailing whitespace. With binary set, as csv does by default, "12\n" passes a check such as $qty > 0 and is then written unquoted with its newline.
A value validated as a number can end the record early and turn the fields after it into a separate row.
Weakness: CWE-116
Which versions are affected by CVE-2026-110757?
How do I fix CVE-2026-110757?
Upgrade to a fixed version.
Is CVE-2026-110757 being exploited?
There is no known exploitation of CVE-2026-110757 in the wild and no public exploit code.
Sources
Also known as AZL-109754, DEBIAN-CVE-2026-110757, GHSA-9gc4-xhw7-655h, UBUNTU-CVE-2026-110757.