Record splitting in Text::CSV_XS lets numeric strings break CSV rows
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
Text::CSV_XS versions before 1.65 for Perl write values without quotes when Perl's integer or numeric flag is set, because the quoting check in combine and print is skipped (CWE-116). A string with leading or trailing whitespace, such as a newline, that passes a numeric check is written unquoted, so a value validated as a number can end the record early and turn the following fields into a separate row.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Text-CSV_XS | before 1.65 | 1.65 | Patch available | CNA |
- Text-CSV_XS Vendor— Affected before 1.65 Fixed in 1.65 Patch available CNA
Remediation
Upgrade Text-CSV_XS to version 1.65. Red Hat lists Red Hat Enterprise Linux 7, 9 and 10 as affected without a fix, and Red Hat lists no available plan for them.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA Text-CSV_XS Fixed in 1.65
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-18 Threatist record created from CVE-2026-110757
- 2026-10-18 Alias added: GHSA-9gc4-xhw7-655h
- 2026-10-18 Affected versions changed · Red Hat
- 2026-10-18 CVSS score added · Red Hat
- 2026-10-20 CVSS score added · CISA ADP
- 2026-10-20 CISA SSVC decision points changed
- 2026-10-20 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-110757 · CVE Program
- CVE-2026-110757 · NVD
- FIRST EPSS
- GHSA-9gc4-xhw7-655h · GitHub Advisory Database · CC BY 4.0
- CVE-2026-110757 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences