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    4 vulnerabilities found for Data::DisjointSet::Shared by EGOR

    CVE-2026-65069 (GCVE-0-2026-65069)

    Vulnerability from nvd – Published: 2026-07-21 19:10 – Updated: 2026-07-21 19:10
    VLAI
    Title
    Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW
    Summary
    Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW. The segment is created in dsu.h with open(path, O_RDWR|O_CREAT, 0666). The mode is 0666, so under the default umask 022 the file is created mode 0644 (world-readable). O_NOFOLLOW is absent, so a symlink planted at the path is followed, and O_EXCL is absent, so the open silently uses a pre-planted file instead of failing. A "Shared" segment naturally lives in a shared directory such as /tmp or /dev/shm, where any local user can read the IPC payloads stored in the world-readable segment, and a pre-planted file or symlink at the path lets a local attacker win a pre-creation race or redirect the open.
    Severity
    No CVSS data available.
    CWE
    • CWE-732 - Incorrect Permission Assignment for Critical Resource
    • CWE-59 - Improper Link Resolution Before File Access
    Assigner
    References
    Impacted products
    Vendor Product Version
    EGOR Data::DisjointSet::Shared Affected: 0 , < 0.02 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Data-DisjointSet-Shared",
          "product": "Data::DisjointSet::Shared",
          "programFiles": [
            "dsu.h"
          ],
          "repo": "https://github.com/vividsnow/perl5-data-disjointset-shared",
          "vendor": "EGOR",
          "versions": [
            {
              "lessThan": "0.02",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW.\n\nThe segment is created in dsu.h with open(path, O_RDWR|O_CREAT, 0666). The mode is 0666, so under the default umask 022 the file is created mode 0644 (world-readable). O_NOFOLLOW is absent, so a symlink planted at the path is followed, and O_EXCL is absent, so the open silently uses a pre-planted file instead of failing.\n\nA \"Shared\" segment naturally lives in a shared directory such as /tmp or /dev/shm, where any local user can read the IPC payloads stored in the world-readable segment, and a pre-planted file or symlink at the path lets a local attacker win a pre-creation race or redirect the open."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-732",
              "description": "CWE-732 Incorrect Permission Assignment for Critical Resource",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-59",
              "description": "CWE-59 Improper Link Resolution Before File Access",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T19:10:00.536Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "url": "https://metacpan.org/release/EGOR/Data-DisjointSet-Shared-0.02/diff/EGOR/Data-DisjointSet-Shared-0.01#dsu.h"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/EGOR/Data-DisjointSet-Shared-0.02/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to Data::DisjointSet::Shared 0.02 or later, which creates the backing file mode 0600 (owner-only) with O_EXCL and O_NOFOLLOW."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW",
      "workarounds": [
        {
          "lang": "en",
          "value": "For deployments that cannot upgrade to 0.02, set a restrictive umask so the backing file is not world-readable and place it in a directory only the owning user can access."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-65069",
    "datePublished": "2026-07-21T19:10:00.536Z",
    "dateReserved": "2026-07-21T15:29:37.117Z",
    "dateUpdated": "2026-07-21T19:10:00.536Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-59147 (GCVE-0-2026-59147)

    Vulnerability from nvd – Published: 2026-07-21 19:05 – Updated: 2026-07-21 19:05
    VLAI
    Title
    Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find
    Summary
    Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find. The attach-time validator dsu_validate_header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. dsu_find walks and path-compresses parent[x] with x a raw file-stored index never bounded against the node count, so both the read and the compression write-back land out of bounds. A local peer that can write the backing file can leave the header valid while poisoning the parent array, so the next find or union both reads and writes through an out-of-bounds parent index, corrupting memory or crashing the process.
    Severity
    No CVSS data available.
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    EGOR Data::DisjointSet::Shared Affected: 0 , < 0.02 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Data-DisjointSet-Shared",
          "product": "Data::DisjointSet::Shared",
          "programFiles": [
            "dsu.h"
          ],
          "programRoutines": [
            {
              "name": "dsu_find"
            }
          ],
          "repo": "https://github.com/vividsnow/perl5-data-disjointset-shared",
          "vendor": "EGOR",
          "versions": [
            {
              "lessThan": "0.02",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find.\n\nThe attach-time validator dsu_validate_header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. dsu_find walks and path-compresses parent[x] with x a raw file-stored index never bounded against the node count, so both the read and the compression write-back land out of bounds.\n\nA local peer that can write the backing file can leave the header valid while poisoning the parent array, so the next find or union both reads and writes through an out-of-bounds parent index, corrupting memory or crashing the process."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T19:05:11.638Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "url": "https://metacpan.org/release/EGOR/Data-DisjointSet-Shared-0.02/diff/EGOR/Data-DisjointSet-Shared-0.01#dsu.h"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/EGOR/Data-DisjointSet-Shared-0.02/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to Data::DisjointSet::Shared 0.02 or later, which bounds every parent index against the node count before using it."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find",
      "workarounds": [
        {
          "lang": "en",
          "value": "For deployments that cannot upgrade to 0.02, place the backing file in a directory writable only by the owning user, so a local peer cannot tamper with the parent array that find and union traverse."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-59147",
    "datePublished": "2026-07-21T19:05:11.638Z",
    "dateReserved": "2026-07-02T16:24:17.913Z",
    "dateUpdated": "2026-07-21T19:05:11.638Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-65069 (GCVE-0-2026-65069)

    Vulnerability from cvelistv5 – Published: 2026-07-21 19:10 – Updated: 2026-07-21 19:10
    VLAI
    Title
    Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW
    Summary
    Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW. The segment is created in dsu.h with open(path, O_RDWR|O_CREAT, 0666). The mode is 0666, so under the default umask 022 the file is created mode 0644 (world-readable). O_NOFOLLOW is absent, so a symlink planted at the path is followed, and O_EXCL is absent, so the open silently uses a pre-planted file instead of failing. A "Shared" segment naturally lives in a shared directory such as /tmp or /dev/shm, where any local user can read the IPC payloads stored in the world-readable segment, and a pre-planted file or symlink at the path lets a local attacker win a pre-creation race or redirect the open.
    Severity
    No CVSS data available.
    CWE
    • CWE-732 - Incorrect Permission Assignment for Critical Resource
    • CWE-59 - Improper Link Resolution Before File Access
    Assigner
    References
    Impacted products
    Vendor Product Version
    EGOR Data::DisjointSet::Shared Affected: 0 , < 0.02 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Data-DisjointSet-Shared",
          "product": "Data::DisjointSet::Shared",
          "programFiles": [
            "dsu.h"
          ],
          "repo": "https://github.com/vividsnow/perl5-data-disjointset-shared",
          "vendor": "EGOR",
          "versions": [
            {
              "lessThan": "0.02",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW.\n\nThe segment is created in dsu.h with open(path, O_RDWR|O_CREAT, 0666). The mode is 0666, so under the default umask 022 the file is created mode 0644 (world-readable). O_NOFOLLOW is absent, so a symlink planted at the path is followed, and O_EXCL is absent, so the open silently uses a pre-planted file instead of failing.\n\nA \"Shared\" segment naturally lives in a shared directory such as /tmp or /dev/shm, where any local user can read the IPC payloads stored in the world-readable segment, and a pre-planted file or symlink at the path lets a local attacker win a pre-creation race or redirect the open."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-732",
              "description": "CWE-732 Incorrect Permission Assignment for Critical Resource",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-59",
              "description": "CWE-59 Improper Link Resolution Before File Access",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T19:10:00.536Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "url": "https://metacpan.org/release/EGOR/Data-DisjointSet-Shared-0.02/diff/EGOR/Data-DisjointSet-Shared-0.01#dsu.h"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/EGOR/Data-DisjointSet-Shared-0.02/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to Data::DisjointSet::Shared 0.02 or later, which creates the backing file mode 0600 (owner-only) with O_EXCL and O_NOFOLLOW."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL or O_NOFOLLOW",
      "workarounds": [
        {
          "lang": "en",
          "value": "For deployments that cannot upgrade to 0.02, set a restrictive umask so the backing file is not world-readable and place it in a directory only the owning user can access."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-65069",
    "datePublished": "2026-07-21T19:10:00.536Z",
    "dateReserved": "2026-07-21T15:29:37.117Z",
    "dateUpdated": "2026-07-21T19:10:00.536Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-59147 (GCVE-0-2026-59147)

    Vulnerability from cvelistv5 – Published: 2026-07-21 19:05 – Updated: 2026-07-21 19:05
    VLAI
    Title
    Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find
    Summary
    Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find. The attach-time validator dsu_validate_header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. dsu_find walks and path-compresses parent[x] with x a raw file-stored index never bounded against the node count, so both the read and the compression write-back land out of bounds. A local peer that can write the backing file can leave the header valid while poisoning the parent array, so the next find or union both reads and writes through an out-of-bounds parent index, corrupting memory or crashing the process.
    Severity
    No CVSS data available.
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    EGOR Data::DisjointSet::Shared Affected: 0 , < 0.02 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Data-DisjointSet-Shared",
          "product": "Data::DisjointSet::Shared",
          "programFiles": [
            "dsu.h"
          ],
          "programRoutines": [
            {
              "name": "dsu_find"
            }
          ],
          "repo": "https://github.com/vividsnow/perl5-data-disjointset-shared",
          "vendor": "EGOR",
          "versions": [
            {
              "lessThan": "0.02",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find.\n\nThe attach-time validator dsu_validate_header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. dsu_find walks and path-compresses parent[x] with x a raw file-stored index never bounded against the node count, so both the read and the compression write-back land out of bounds.\n\nA local peer that can write the backing file can leave the header valid while poisoning the parent array, so the next find or union both reads and writes through an out-of-bounds parent index, corrupting memory or crashing the process."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T19:05:11.638Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "url": "https://metacpan.org/release/EGOR/Data-DisjointSet-Shared-0.02/diff/EGOR/Data-DisjointSet-Shared-0.01#dsu.h"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/EGOR/Data-DisjointSet-Shared-0.02/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to Data::DisjointSet::Shared 0.02 or later, which bounds every parent index against the node count before using it."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Data::DisjointSet::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via an unvalidated parent index in dsu_find",
      "workarounds": [
        {
          "lang": "en",
          "value": "For deployments that cannot upgrade to 0.02, place the backing file in a directory writable only by the owning user, so a local peer cannot tamper with the parent array that find and union traverse."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-59147",
    "datePublished": "2026-07-21T19:05:11.638Z",
    "dateReserved": "2026-07-02T16:24:17.913Z",
    "dateUpdated": "2026-07-21T19:05:11.638Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}