CVE-2026-110755
Description
A flaw was found in Text::CSV_XS. This vulnerability allows an attacker to cause a Denial of Service (DoS) by providing specially crafted comma-separated value (CSV) input using carriage return (CR)-only line endings. Under default configuration settings, the parser repeatedly copies unparsed data across records, leading to excessive CPU consumption and application unresponsiveness.
Statement
Red Hat has evaluated this vulnerability as having a Moderate impact because the flaw results in high CPU utilization and application unresponsiveness without permitting code execution or unauthorized data modification. The vulnerability is only exposed when Perl applications consume untrusted CSV documents using default parsing settings without an explicit line-break definition. Processing is confined to user space, limiting the blast radius to the specific process handling the malformed input.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.3 | N/A | 7.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | Low | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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