CVE-2026-110758 HMBRAND CVE debrief

Who should care

Defenders responsible for Perl applications or systems using Text::CSV_XS should assess exposure and take necessary remediation steps. This includes verifying the version of Text::CSV_XS in use and updating to version 1.65 or later if necessary. Additionally, defenders should review the source references for additional information about the fix and changes in the affected software. Operators, platform administrators, vulnerability management teams, and IT

Why it matters

CVE-2026-110758 is a vulnerability in Text::CSV_XS that can lead to accessing memory before the field's heap buffer, potentially causing issues with Perl applications or systems using this module.

• Verify the version of Text::CSV_XS in use and update to version 1.65 or later if necessary.
• Assess if the application or system is exposed to this vulnerability and take necessary remediation steps.

Technical summary

The vulnerability occurs when reading before the start of an all-blank field under allow_whitespace in strip_trail_whitespace, which can lead to accessing memory before the field's heap buffer. This can happen when the field is only blanks and the byte before the field's heap buffer is also a space or tab. The vulnerability can cause issues with Perl applications or systems using this module, particularly if they process untrusted input. The affected product is Text::CSV_XS versions before 1.65 for Perl. Defenders should prioritize verifying the version of Text::CSV_XS in use and assessing if the application or system is exposed to this vulnerability.

Defensive priority

Defenders should prioritize verifying the version of Text::CSV_XS in use and assessing if the application or system is exposed to this vulnerability.

Recommended defensive actions

• Verify the version of Text::CSV_XS in use and update to version 1.65 or later if necessary.
• Assess if the application or system is exposed to this vulnerability and take necessary remediation steps.
• Review the source references for additional information about the fix and changes in the affected software.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The vulnerability is described in the CVE record and the NVD vulnerability detail page. The source references provide additional information about the fix and changes in the affected software. The CVE record was published on 2026-10-16T23:17:01.057Z and has not been modified since then. The NVD vulnerability detail page provides a detailed analysis of the vulnerability, including its potential impact and mitigation strategies. Additional information can be found in the source references.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.