CVE-2026-8594 Details
Description
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.
A denial-of-service vulnerability has been identified in the Text::LineFold module for Perl, specifically in versions through 2019.001. The issue arises because the module improperly handles line break characters, leading to unintended duplication of the input string. This mismanagement can cause unexpected resource consumption.
Users can update to the patched version of the Text::LineFold module, which is available on CPAN.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 30, 2026CISA-ADP
Assessed Jun 1, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/hatukanezumi/Unicode-LineBreak/pull/6 | CPANSec | ExploitIssue TrackingVendor |
| https://metacpan.org/release/NEZUMI/Unicode-LineBreak-2019.001/source/lib/Text/LineFold.pm#L407-415 | CPANSec | Source CodeVendor |
| https://security.metacpan.org/patches/U/Unicode-LineBreak/2019.001/CVE-2026-8594-r1.patch | CPANSec | Broken Link |
| http://www.openwall.com/lists/oss-security/2026/05/30/6 | CVE |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-405 | Asymmetric Resource Consumption (Amplification) | CPANSec |
| CWE-407 | Inefficient Algorithmic Complexity | CPANSec |
Affected Products
| Product | Versions |
|---|---|
| Text::LineFold | <= 2019.001 |
CPE
Remediation | |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | CPANSec |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 1, 2026 | CVE Modified | CISA-ADP |
| May 30, 2026 | CVE Modified | CVE |
| May 30, 2026 | New CVE Received | CPANSec |