Use-after-free in Text::CSV_XS Perl module when skipping empty rows
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- 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. Impact type from CWE-416 and the CVSS impact.
Summary
Text::CSV_XS versions from 1.46 before 1.65 for Perl have a use-after-free (CWE-416). When skip_empty_rows skips an empty line in getline, the parser drops a reference to a variable bound with bind_columns, so the freed variable can crash the process. An unauthenticated remote attacker can trigger this without user interaction.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Text::CSV_XS versions from 1.46 before 1.65 for Perl have a use-after-free of bind_columns variables when skip_empty_rows skips an empty line in getline. With bind_columns, the parser writes each field into the caller's own scalar without taking a reference to it. When skip_empty_rows skips an empty last line, the parser frees the current field scalar without checking whether it is bound, dropping one reference from the application's variable. The "eof" mode does the same on any empty line. The variable is then freed while the application still references it, so later code uses freed memory and can crash the process.
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 | 1.46 to before 1.65 | 1.65 | Patch available | CNA |
- Text-CSV_XS Vendor— Affected 1.46 to before 1.65 Fixed in 1.65 Patch available CNA
Remediation
Update Text-CSV_XS to version 1.65. Red Hat Enterprise Linux 7, 9 and 10 are listed as affected with no fix available.
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-2026-110753
- 2026-10-18 Alias added: GHSA-gvjh-vp76-v2mp
- 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-2026-110753 · CVE Program
- CVE-2026-110753 · NVD
- FIRST EPSS
- GHSA-gvjh-vp76-v2mp · GitHub Advisory Database · CC BY 4.0
- CVE-2026-110753 · Red Hat security data · CC BY 4.0
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