Medium 6.2Published May 30, 2026

CVE-2026-8594Text::LineFold versions through 2019.001 for Perl duplicate the output based on the number of special break characters

Updated under an hour ago (Oct 27, 2026, 10:40 AM ET)

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It affects NEZUMI Text::LineFold. Add what you run to find out whether that includes you.

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Every CVE for NEZUMI Text::LineFold

Exploited in the last 30 days

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.

CVSS: 6.2 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-405, CWE-407
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: CPANSec
NVD analysis: Deferred
Record last updated: Jun 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

NEZUMI Text::LineFold nezumi:text_linefold (from the name)	through 2019.001	CNA record

References

References

https://metacpan.org/release/NEZUMI/Unicode-LineBreak-2019.001/source/lib/Text/LineFold.pm#L407-415
https://security.metacpan.org/patches/U/Unicode-LineBreak/2019.001/CVE-2026-8594-r1.patch	patch
https://github.com/hatukanezumi/Unicode-LineBreak/pull/6	issue-tracking
http://www.openwall.com/lists/oss-security/2026/05/30/6

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.