Vulnerability-Lookup

CVE-2026-8594 (GCVE-0-2026-8594)

Vulnerability from cvelistv5 – Published: 2026-05-30 15:32 – Updated: 2026-06-01 15:06

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)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-405 - Asymmetric Resource Consumption (Amplification)
CWE-407 - Inefficient Algorithmic Complexity

Assigner

CPANSec

References

4 references

URL	Tags
https://metacpan.org/release/NEZUMI/Unicode-LineB…
https://security.metacpan.org/patches/U/Unicode-L…	patch
https://github.com/hatukanezumi/Unicode-LineBreak…	issue-tracking
http://www.openwall.com/lists/oss-security/2026/05/30/6

Impacted products

1 product

Vendor	Product	Version
NEZUMI	Text::LineFold	Affected: 0 , ≤ 2019.001 (custom)

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2026-05-30T18:23:34.015Z",
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        }
      ],
      "impacts": [
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          "capecId": "CAPEC-130",
          "descriptions": [
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              "value": "CAPEC-130 Excessive Allocation"
            }
          ]
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
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              "description": "CWE-405 Asymmetric Resource Consumption (Amplification)",
              "lang": "en",
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            }
          ]
        },
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          "descriptions": [
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        },
        {
          "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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    "datePublished": "2026-05-30T15:32:30.449Z",
    "dateReserved": "2026-05-14T11:54:55.248Z",
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      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Text::LineFold versions through 2019.001 for Perl duplicate the output based on the number of special break characters",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8594.json",
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}

FKIE_CVE-2026-8594

Vulnerability from fkie_nvd - Published: 2026-05-30 16:17 - Updated: 2026-07-22 07:10

Severity

6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/hatukanezumi/Unicode-LineBreak/pull/6
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/NEZUMI/Unicode-LineBreak-2019.001/source/lib/Text/LineFold.pm#L407-415
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://security.metacpan.org/patches/U/Unicode-LineBreak/2019.001/CVE-2026-8594-r1.patch
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/05/30/6

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Unicode-LineBreak",
          "product": "Text::LineFold",
          "programFiles": [
            "lib/Text/LineFold.pm"
          ],
          "programRoutines": [
            {
              "name": "Text::LineFold::fold"
            }
          ],
          "repo": "https://github.com/hatukanezumi/Unicode-LineBreak/",
          "vendor": "NEZUMI",
          "versions": [
            {
              "lessThanOrEqual": "2019.001",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    },
    {
      "lang": "es",
      "value": "Las versiones de Text::LineFold hasta la 2019.001 para Perl duplican la salida bas\u00e1ndose en el n\u00famero de caracteres de salto especiales.\n\nText::LineFold divide la cadena de entrada por caracteres de salto de l\u00ednea espec\u00edficos (como VT, FF y otros) en segmentos, pero aplica la funci\u00f3n de salto a la cadena completa, no solo al segmento.\n\nUn efecto secundario de esto es que la entrada completa puede duplicarse para cada segmento. Adem\u00e1s de ser incorrecto, esto puede llevar a un consumo inesperado de recursos y una posible denegaci\u00f3n de servicio.\n\nTenga en cuenta que Text::LineFold forma parte de la distribuci\u00f3n Unicode-LineBreak, la cual puede tener un n\u00famero de versi\u00f3n superior al del m\u00f3dulo."
    }
  ],
  "id": "CVE-2026-8594",
  "lastModified": "2026-07-22T07:10:00.107",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8594",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-01T15:06:26.879298Z",
          "version": "2.0.3"
        }
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    ]
  },
  "published": "2026-05-30T16:17:05.067",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/hatukanezumi/Unicode-LineBreak/pull/6"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/NEZUMI/Unicode-LineBreak-2019.001/source/lib/Text/LineFold.pm#L407-415"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://security.metacpan.org/patches/U/Unicode-LineBreak/2019.001/CVE-2026-8594-r1.patch"
    },
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  "vulnStatus": "Deferred",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-405"
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          "value": "CWE-407"
        }
      ],
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      "type": "Secondary"
    }
  ]
}

GHSA-XFCF-WWR2-W555

Vulnerability from github – Published: 2026-05-30 18:31 – Updated: 2026-06-01 18:31

Details

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)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-8594"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-405"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-30T16:17:05Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-xfcf-wwr2-w555",
  "modified": "2026-06-01T18:31:47Z",
  "published": "2026-05-30T18:31:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8594"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hatukanezumi/Unicode-LineBreak/pull/6"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/NEZUMI/Unicode-LineBreak-2019.001/source/lib/Text/LineFold.pm#L407-415"
    },
    {
      "type": "WEB",
      "url": "https://security.metacpan.org/patches/U/Unicode-LineBreak/2019.001/CVE-2026-8594-r1.patch"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/30/6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

ubuntu-cve-2026-8594

Vulnerability from osv_ubuntu

Published

2026-05-30 16:17

Modified

2026-06-03 11:20

Summary

Details

Severity

6.2 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-8594	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-8594	REPORT
	https://lists.security.metacpan.org/cve-announce/…	REPORT
	https://github.com/hatukanezumi/Unicode-LineBreak…	REPORT
	https://metacpan.org/release/NEZUMI/Unicode-LineB…	REPORT
	https://security.metacpan.org/patches/U/Unicode-L…	REPORT
	http://www.openwall.com/lists/oss-security/2026/05/30/6	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libunicode-linebreak-perl",
            "binary_version": "0.0.20151201-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libunicode-linebreak-perl",
        "purl": "pkg:deb/ubuntu/libunicode-linebreak-perl@0.0.20151201-1build1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.20150716-1",
        "0.0.20151201-1",
        "0.0.20151201-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libunicode-linebreak-perl",
            "binary_version": "0.0.20160702-1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libunicode-linebreak-perl",
        "purl": "pkg:deb/ubuntu/libunicode-linebreak-perl@0.0.20160702-1build2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.20160702-1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libunicode-linebreak-perl",
            "binary_version": "0.0.20190101-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libunicode-linebreak-perl",
        "purl": "pkg:deb/ubuntu/libunicode-linebreak-perl@0.0.20190101-1build1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.20190101-1",
        "0.0.20190101-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libunicode-linebreak-perl",
            "binary_version": "0.0.20190101-1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libunicode-linebreak-perl",
        "purl": "pkg:deb/ubuntu/libunicode-linebreak-perl@0.0.20190101-1build3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
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          ],
          "type": "ECOSYSTEM"
        }
      ],
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        "0.0.20190101-1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libunicode-linebreak-perl",
            "binary_version": "0.0.20190101-1build7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libunicode-linebreak-perl",
        "purl": "pkg:deb/ubuntu/libunicode-linebreak-perl@0.0.20190101-1build7?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
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            {
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            }
          ],
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      ],
      "versions": [
        "0.0.20190101-1build4",
        "0.0.20190101-1build5",
        "0.0.20190101-1build6",
        "0.0.20190101-1build7"
      ]
    },
    {
      "ecosystem_specific": {
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          {
            "binary_name": "libunicode-linebreak-perl",
            "binary_version": "0.0.20190101-1build8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libunicode-linebreak-perl",
        "purl": "pkg:deb/ubuntu/libunicode-linebreak-perl@0.0.20190101-1build8?arch=source\u0026distro=questing"
      },
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          "type": "ECOSYSTEM"
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      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libunicode-linebreak-perl",
            "binary_version": "0.0.20190101-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libunicode-linebreak-perl",
        "purl": "pkg:deb/ubuntu/libunicode-linebreak-perl@0.0.20190101-3?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.20190101-1build8",
        "0.0.20190101-2",
        "0.0.20190101-3"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-8594",
  "modified": "2026-06-03T11:20:10Z",
  "published": "2026-05-30T16:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-8594"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-8594"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/40542383/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/hatukanezumi/Unicode-LineBreak/pull/6"
    },
    {
      "type": "REPORT",
      "url": "https://metacpan.org/release/NEZUMI/Unicode-LineBreak-2019.001/source/lib/Text/LineFold.pm#L407-415"
    },
    {
      "type": "REPORT",
      "url": "https://security.metacpan.org/patches/U/Unicode-LineBreak/2019.001/CVE-2026-8594-r1.patch"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/30/6"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-8594"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-8594 (GCVE-0-2026-8594)

FKIE_CVE-2026-8594

GHSA-XFCF-WWR2-W555

ubuntu-cve-2026-8594

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature