Vulnerability-Lookup

CVE-2026-13082 (GCVE-0-2026-13082)

Vulnerability from cvelistv5 – Published: 2026-07-17 12:54 – Updated: 2026-07-17 17:29

Title

GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets

Summary

GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets. The random method creates the challenge text used for the CAPTCHA by sampling characters from an array using Perl's built-in rand function, and generates a (by default) six-character string. The built-in rand function is unsuitable for security applications because it is predictable and reversible.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-17 17:29 UTC

CWE

CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator
CWE-804 - Guessable CAPTCHA

Assigner

CPANSec CNA under the redhat root

CNA scorecard C 61/100 over 360 records in the last 180 days details

References

2 references

URL	Tags
https://www.cve.org/CVERecord?id=CVE-2025-40916	related
https://security.metacpan.org/patches/G/GD-Securi…	patch

Impacted products

1 product

Vendor	Product	Version	CPE status
BURAK	GD::SecurityImage	Affected: 0 , ≤ 1.75 (custom)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
              "version": "3.1"
            }
          },
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                  },
                  {
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                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-07-17T17:29:10.397745Z",
                "version": "2.0.3"
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      }
    ],
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          "defaultStatus": "unaffected",
          "packageName": "GD-SecurityImage",
          "product": "GD::SecurityImage",
          "programFiles": [
            "lib/GD/SecurityImage.pm"
          ],
          "programRoutines": [
            {
              "name": "GD::SecurityImage::random"
            },
            {
              "name": "GD::SecurityImage::random_angle"
            },
            {
              "name": "GD::SecurityImage::particle"
            }
          ],
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        }
      ],
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        }
      ],
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            }
          ]
        },
        {
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            {
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              "description": "CWE-804 Guessable CAPTCHA",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
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        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
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          "url": "https://www.cve.org/CVERecord?id=CVE-2025-40916"
        },
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          "tags": [
            "patch"
          ],
          "url": "https://security.metacpan.org/patches/G/GD-SecurityImage/1.75/CVE-2026-13082-r1.patch"
        }
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      "source": {
        "discovery": "UNKNOWN"
      },
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          "lang": "en",
          "time": "2018-12-24T00:00:00.000Z",
          "value": "Version 1.75 released."
        },
        {
          "lang": "en",
          "time": "2026-03-10T00:00:00.000Z",
          "value": "The git repository was archived."
        }
      ],
      "title": "GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets",
      "workarounds": [
        {
          "lang": "en",
          "value": "GD::SecurityImage has not been updated since 2018, the module is flagged as ADOPTME on CPAN, and the git repository is archived as read-only, which prevents issues and pull requests from being created.\n\nUsers are advised to find an alternative solution.\n\nFor users who are unable to migrate to an alternative, install Crypt::URandom::MonkeyPatch (which will override the built-in rand with a wrapper around Crypt::URandom) and apply the patch."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
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    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-13082",
    "datePublished": "2026-07-17T12:54:07.177Z",
    "dateReserved": "2026-06-23T18:17:08.243Z",
    "dateUpdated": "2026-07-17T17:29:23.536Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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  "vulnerability-lookup:meta": {
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      "date": "2026-11-14",
      "epss": "0.00305",
      "percentile": "0.23673"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://cpan.org/modules",
                "defaultStatus": "unaffected",
                "packageName": "GD-SecurityImage",
                "product": "GD::SecurityImage",
                "programFiles": [
                  "lib/GD/SecurityImage.pm"
                ],
                "programRoutines": [
                  {
                    "name": "GD::SecurityImage::random"
                  },
                  {
                    "name": "GD::SecurityImage::random_angle"
                  },
                  {
                    "name": "GD::SecurityImage::particle"
                  }
                ],
                "repo": "https://github.com/burak/CPAN-GD-SecurityImage",
                "vendor": "BURAK",
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                  }
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          }
        ],
        "cveTags": [],
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            "lang": "en",
            "value": "GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets.\n\nThe random method creates the challenge text used for the CAPTCHA by sampling characters from an array using Perl\u0027s built-in rand function, and generates a (by default) six-character string.\n\nThe built-in rand function is unsuitable for security applications because it is predictable and reversible."
          },
          {
            "lang": "es",
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          }
        ],
        "id": "CVE-2026-13082",
        "lastModified": "2026-10-24T20:10:00.137",
        "metrics": {
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                "attackVector": "NETWORK",
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                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
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          ],
          "ssvcV203": [
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          },
          {
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          }
        ],
        "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "vulnStatus": "Deferred",
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              }
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          }
        ]
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      "initial_release_date": "2026-07-17T12:54:07.177000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "perl-GD-SecurityImage: the rand function is used to generate secrets",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-13082.json",
      "version": "3"
    },
    "vulnrichment": {
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          {
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              {
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              "time": "2018-12-24T00:00:00.000Z",
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              "time": "2026-03-10T00:00:00.000Z",
              "value": "The git repository was archived."
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          ],
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          "workarounds": [
            {
              "lang": "en",
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            }
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      "cveMetadata": {
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}

FKIE_CVE-2026-13082

Vulnerability from fkie_nvd - Published: 2026-07-17 13:17 - Updated: 2026-10-24 20:10

Severity

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

Summary

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://security.metacpan.org/patches/G/GD-SecurityImage/1.75/CVE-2026-13082-r1.patch
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://www.cve.org/CVERecord?id=CVE-2025-40916

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "GD-SecurityImage",
          "product": "GD::SecurityImage",
          "programFiles": [
            "lib/GD/SecurityImage.pm"
          ],
          "programRoutines": [
            {
              "name": "GD::SecurityImage::random"
            },
            {
              "name": "GD::SecurityImage::random_angle"
            },
            {
              "name": "GD::SecurityImage::particle"
            }
          ],
          "repo": "https://github.com/burak/CPAN-GD-SecurityImage",
          "vendor": "BURAK",
          "versions": [
            {
              "lessThanOrEqual": "1.75",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets.\n\nThe random method creates the challenge text used for the CAPTCHA by sampling characters from an array using Perl\u0027s built-in rand function, and generates a (by default) six-character string.\n\nThe built-in rand function is unsuitable for security applications because it is predictable and reversible."
    },
    {
      "lang": "es",
      "value": "Las versiones de GD::SecurityImage hasta la 1.75 para Perl usan rand para generar secretos.\n\nEl m\u00e9todo aleatorio crea el texto de desaf\u00edo usado para el CAPTCHA muestreando caracteres de un array usando la funci\u00f3n rand incorporada de Perl, y genera una cadena (por defecto) de seis caracteres.\n\nLa funci\u00f3n rand incorporada no es adecuada para aplicaciones de seguridad porque es predecible y reversible."
    }
  ],
  "id": "CVE-2026-13082",
  "lastModified": "2026-10-24T20:10:00.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
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            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-17T17:29:10.397745Z",
          "version": "2.0.3"
        }
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  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://security.metacpan.org/patches/G/GD-SecurityImage/1.75/CVE-2026-13082-r1.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40916"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-338"
        },
        {
          "lang": "en",
          "value": "CWE-804"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

GHSA-P496-RGMP-V9MG

Vulnerability from github – Published: 2026-07-17 15:32 – Updated: 2026-07-17 18:31

Details

GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets.

The random method creates the challenge text used for the CAPTCHA by sampling characters from an array using Perl's built-in rand function, and generates a (by default) six-character string.

The built-in rand function is unsuitable for security applications because it is predictable and reversible.

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-13082"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-17T13:17:55Z",
    "severity": "MODERATE"
  },
  "details": "GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets.\n\nThe random method creates the challenge text used for the CAPTCHA by sampling characters from an array using Perl\u0027s built-in rand function, and generates a (by default) six-character string.\n\nThe built-in rand function is unsuitable for security applications because it is predictable and reversible.",
  "id": "GHSA-p496-rgmp-v9mg",
  "modified": "2026-07-17T18:31:24Z",
  "published": "2026-07-17T15:32:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13082"
    },
    {
      "type": "WEB",
      "url": "https://security.metacpan.org/patches/G/GD-SecurityImage/1.75/CVE-2026-13082-r1.patch"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40916"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

UBUNTU-CVE-2026-13082 (CVE-2026-13082)

Vulnerability from osv_ubuntu – Published: 2026-07-17 13:17 – Updated: 2026-10-17 09:38 – Source website

Details

Severity

5.3 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-13082	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-13082	REPORT
	https://lists.security.metacpan.org/cve-announce/…	REPORT
	https://security.metacpan.org/patches/G/GD-Securi…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgd-securityimage-perl",
            "binary_version": "1.73-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libgd-securityimage-perl",
        "purl": "pkg:deb/ubuntu/libgd-securityimage-perl@1.73-2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.73-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgd-securityimage-perl",
            "binary_version": "1.73-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libgd-securityimage-perl",
        "purl": "pkg:deb/ubuntu/libgd-securityimage-perl@1.73-2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.73-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgd-securityimage-perl",
            "binary_version": "1.75-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libgd-securityimage-perl",
        "purl": "pkg:deb/ubuntu/libgd-securityimage-perl@1.75-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.75-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgd-securityimage-perl",
            "binary_version": "1.75-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libgd-securityimage-perl",
        "purl": "pkg:deb/ubuntu/libgd-securityimage-perl@1.75-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.75-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgd-securityimage-perl",
            "binary_version": "1.75-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libgd-securityimage-perl",
        "purl": "pkg:deb/ubuntu/libgd-securityimage-perl@1.75-2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.75-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgd-securityimage-perl",
            "binary_version": "1.75-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "libgd-securityimage-perl",
        "purl": "pkg:deb/ubuntu/libgd-securityimage-perl@1.75-3?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.75-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libgd-securityimage-perl",
            "binary_version": "1.75-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libgd-securityimage-perl",
        "purl": "pkg:deb/ubuntu/libgd-securityimage-perl@1.75-3?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.75-3"
      ]
    }
  ],
  "aliases": [],
  "details": "GD::SecurityImage versions through 1.75 for Perl use rand to generate secrets. The random method creates the challenge text used for the CAPTCHA by sampling characters from an array using Perl\u0027s built-in rand function, and generates a (by default) six-character string. The built-in rand function is unsuitable for security applications because it is predictable and reversible.",
  "id": "UBUNTU-CVE-2026-13082",
  "modified": "2026-10-17T09:38:00Z",
  "published": "2026-07-17T13:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-13082"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-13082"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/41903267/"
    },
    {
      "type": "REPORT",
      "url": "https://security.metacpan.org/patches/G/GD-SecurityImage/1.75/CVE-2026-13082-r1.patch"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-13082"
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-13082 (GCVE-0-2026-13082)

FKIE_CVE-2026-13082

GHSA-P496-RGMP-V9MG

UBUNTU-CVE-2026-13082 (CVE-2026-13082)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour