Vulnerability · Published Oct 16, 2026 · Assigned by CPANSec
CVE-2026-110757Text::CSV_XS versions before 1.65 for Perl allow record splitting by writing strings used as numbers without quotes in combine
Critical 9.8
In plain English
A critical-severity security flaw in Text-CSV_XS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libtext-csv-xs-perl | no fix listed | DEBIAN-CVE-2026-110757 |
| Debian:13 | libtext-csv-xs-perl | no fix listed | DEBIAN-CVE-2026-110757 |
| Debian:14 | libtext-csv-xs-perl | 1.65-1 | DEBIAN-CVE-2026-110757 |
| Ubuntu:22.04:LTS | libtext-csv-xs-perl | no fix listed | UBUNTU-CVE-2026-110757 |
| Ubuntu:24.04:LTS | libtext-csv-xs-perl | no fix listed | UBUNTU-CVE-2026-110757 |
| Ubuntu:26.04:LTS | libtext-csv-xs-perl | no fix listed | UBUNTU-CVE-2026-110757 |
| Ubuntu:26.10 | libtext-csv-xs-perl | no fix listed | UBUNTU-CVE-2026-110757 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Text-CSV_XS | 0 – before 1.65 |
Weakness: CWE-116 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H