CVE-2026-8594
MediumCVSS 6.2Exploitation Probability (EPSS)
Low risk10th percentile - higher than 10% of all known CVEs
Summary
A vulnerability was found in the Text::LineFold module for Perl (part of the Unicode-LineBreak distribution). The module splits the input string into segments based on special line break characters but applies the break function to the entire string, not just the segment. This causes output duplication for each segment, potentially leading to excessive resource consumption and denial of service.
Risk Assessment
An attacker can send a specially crafted string, causing excessive memory or CPU usage, potentially leading to denial of service.
Recommendation
Update the Text::LineFold module to the latest version or implement input length limits.
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Original NVD description (English source)
Text::LineFold versions through 2019.001 for Perl duplicate the output based on the number of special break characters. Text::LineFold splits the input string by specific line break characters (such as VT, FF and others) into segments, but applies the break function to the entire string, not just the segment. A side effect of this is that the full input can be duplicated for each segment. Besides being incorrect, this can lead to unexpected resource consumption and possible denial of service. Note that Text::LineFold is part of the Unicode-LineBreak distribution, which may have a higher version number than the module.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

