CVE-2026-8594 (GCVE-0-2026-8594)
Vulnerability from cvelistv5 – Published: 2026-05-30 15:32 – Updated: 2026-06-01 15:06
VLAI
EPSS
VEX
Title
Text::LineFold versions through 2019.001 for Perl duplicate the output based on the number of special break characters
Summary
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.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 15:06 UTC
CWE
Assigner
CPANSec
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NEZUMI | Text::LineFold |
Affected:
0 , ≤ 2019.001
(custom)
|
{
"containers": {
"adp": [
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"dateUpdated": "2026-05-30T18:23:34.015Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
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"url": "http://www.openwall.com/lists/oss-security/2026/05/30/6"
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"title": "CVE Program Container"
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"metrics": [
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"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.2,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
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"content": {
"id": "CVE-2026-8594",
"options": [
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{
"Technical Impact": "partial"
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"role": "CISA Coordinator",
"timestamp": "2026-06-01T15:06:26.879298Z",
"version": "2.0.3"
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"providerMetadata": {
"dateUpdated": "2026-06-01T15:06:29.639Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"cna": {
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"defaultStatus": "unaffected",
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"programFiles": [
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"programRoutines": [
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"name": "Text::LineFold::fold"
}
],
"repo": "https://github.com/hatukanezumi/Unicode-LineBreak/",
"vendor": "NEZUMI",
"versions": [
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"status": "affected",
"version": "0",
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"value": "Text::LineFold versions through 2019.001 for Perl duplicate the output based on the number of special break characters.\n\nText::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.\n\nA 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.\n\nNote that Text::LineFold is part of the Unicode-LineBreak distribution, which may have a higher version number than the module."
}
],
"impacts": [
{
"capecId": "CAPEC-130",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-130 Excessive Allocation"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-405",
"description": "CWE-405 Asymmetric Resource Consumption (Amplification)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-407",
"description": "CWE-407 Inefficient Algorithmic Complexity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-30T15:44:13.279Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"url": "https://metacpan.org/release/NEZUMI/Unicode-LineBreak-2019.001/source/lib/Text/LineFold.pm#L407-415"
},
{
"tags": [
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"url": "https://security.metacpan.org/patches/U/Unicode-LineBreak/2019.001/CVE-2026-8594-r1.patch"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/hatukanezumi/Unicode-LineBreak/pull/6"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Text::LineFold versions through 2019.001 for Perl duplicate the output based on the number of special break characters",
"workarounds": [
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"lang": "en",
"value": "Apply the patch."
}
],
"x_generator": {
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}
}
},
"cveMetadata": {
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"assignerShortName": "CPANSec",
"cveId": "CVE-2026-8594",
"datePublished": "2026-05-30T15:32:30.449Z",
"dateReserved": "2026-05-14T11:54:55.248Z",
"dateUpdated": "2026-06-01T15:06:29.639Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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