CVE-2026-8594

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 v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/hatukanezumi/Unicode-LineBreak/pull/6
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
http://www.openwall.com/lists/oss-security/2026/05/30/6

Configurations

No configuration.

History

01 Jun 2026, 17:17

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.2

30 May 2026, 19:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/05/30/6 -

30 May 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-30 16:17

Updated : 2026-06-17 11:04

NVD link : CVE-2026-8594

Mitre link : CVE-2026-8594

CVE.ORG link : CVE-2026-8594

JSON object : View

Products Affected

No product.

CWE

CWE-405

Asymmetric Resource Consumption (Amplification)

CWE-407

Inefficient Algorithmic Complexity

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