Vulnerability-Lookup

CVE-2026-5083 (GCVE-0-2026-5083)

Vulnerability from cvelistv5 – Published: 2026-04-08 05:53 – Updated: 2026-04-08 17:24

Title

Ado::Sessions versions through 0.935 for Perl generates insecure session ids

Summary

Ado::Sessions versions through 0.935 for Perl generates insecure session ids. The session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. Predicable session ids could allow an attacker to gain access to systems. Note that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-340 - Generation of Predictable Numbers or Identifiers
CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator

Assigner

CPANSec

References

4 references

URL	Tags
https://github.com/kberov/Ado/issues/112	issue-tracking
https://backpan.perl.org/authors/id/B/BE/BEROV/Ad…
https://security.metacpan.org/docs/guides/random-…	technical-description
http://www.openwall.com/lists/oss-security/2026/04/08/7

Impacted products

1 product

Vendor	Product	Version
BEROV	Ado::Sessions	Affected: 0 , ≤ 0.935 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-5083",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-08T16:08:27.234472Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-08T16:08:29.799Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-04-08T17:24:13.917Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/04/08/7"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Ado",
          "product": "Ado::Sessions",
          "programFiles": [
            "lib/Ado/Session.pm"
          ],
          "programRoutines": [
            {
              "name": "Ado::Sessions::generate_id"
            }
          ],
          "repo": "https://github.com/kberov/Ado",
          "vendor": "BEROV",
          "versions": [
            {
              "lessThanOrEqual": "0.935",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Ado::Sessions versions through 0.935 for Perl generates insecure session ids.\n\nThe session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\n\nPredicable session ids could allow an attacker to gain access to systems.\n\nNote that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-115",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-115 Authentication Bypass"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-340",
              "description": "CWE-340 Generation of Predictable Numbers or Identifiers",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-338",
              "description": "CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-08T05:53:16.963Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/kberov/Ado/issues/112"
        },
        {
          "url": "https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://security.metacpan.org/docs/guides/random-data-for-security.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2017-09-02T00:00:00.000Z",
          "value": "Last version of Ado was released on CPAN."
        },
        {
          "lang": "en",
          "time": "2018-09-24T00:00:00.000Z",
          "value": "Announcement that Ado will not be updated anymore."
        }
      ],
      "title": "Ado::Sessions versions through 0.935 for Perl generates insecure session ids",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-5083",
    "datePublished": "2026-04-08T05:53:16.963Z",
    "dateReserved": "2026-03-28T19:14:30.969Z",
    "dateUpdated": "2026-04-08T17:24:13.917Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-5083",
      "date": "2026-08-11",
      "epss": "0.00428",
      "percentile": "0.35373"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-5083\",\"sourceIdentifier\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"published\":\"2026-04-08T06:16:29.163\",\"lastModified\":\"2026-07-24T20:10:00.147\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Ado::Sessions versions through 0.935 for Perl generates insecure session ids.\\n\\nThe session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\\n\\nPredicable session ids could allow an attacker to gain access to systems.\\n\\nNote that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.\"},{\"lang\":\"es\",\"value\":\"Las versiones de Ado::Sessions hasta la 0.935 para Perl generan identificadores de sesi\u00f3n inseguros.\\n\\nEl identificador de sesi\u00f3n se genera a partir de un hash SHA-1 sembrado con la funci\u00f3n rand incorporada, el tiempo de \u00e9poca y el PID. El PID provendr\u00e1 de un peque\u00f1o conjunto de n\u00fameros, y el tiempo de \u00e9poca puede ser adivinado, si no se filtra del encabezado HTTP Date. La funci\u00f3n rand incorporada no es adecuada para uso criptogr\u00e1fico.\\n\\nIdentificadores de sesi\u00f3n predecibles podr\u00edan permitir a un atacante obtener acceso a los sistemas.\\n\\nTenga en cuenta que Ado ya no recibe mantenimiento y ha sido eliminado del \u00edndice CPAN. Todav\u00eda est\u00e1 disponible en BackPAN.\"}],\"affected\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"affectedData\":[{\"vendor\":\"BEROV\",\"product\":\"Ado::Sessions\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://cpan.org/modules\",\"packageName\":\"Ado\",\"programFiles\":[\"lib/Ado/Session.pm\"],\"programRoutines\":[{\"name\":\"Ado::Sessions::generate_id\"}],\"repo\":\"https://github.com/kberov/Ado\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"0.935\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-04-08T16:08:27.234472Z\",\"id\":\"CVE-2026-5083\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-338\"},{\"lang\":\"en\",\"value\":\"CWE-340\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:berov:ado\\\\:\\\\:sessions:*:*:*:*:*:perl:*:*\",\"versionEndIncluding\":\"0.935\",\"matchCriteriaId\":\"1DF482FB-2415-4BAE-B16A-99EA9F0CD85B\"}]}]}],\"references\":[{\"url\":\"https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"tags\":[\"Product\"]},{\"url\":\"https://github.com/kberov/Ado/issues/112\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://security.metacpan.org/docs/guides/random-data-for-security.html\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/04/08/7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-06-05T19:49:01+00:00",
      "cve": "CVE-2026-5083",
      "id": "CVE-2026-5083",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Ado::Sessions versions through 0.935 for Perl generates insecure session ids",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5083.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"http://www.openwall.com/lists/oss-security/2026/04/08/7\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2026-04-08T17:24:13.917Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-5083\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-08T16:08:27.234472Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-08T16:08:22.603Z\"}}], \"cna\": {\"title\": \"Ado::Sessions versions through 0.935 for Perl generates insecure session ids\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"impacts\": [{\"capecId\": \"CAPEC-115\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-115 Authentication Bypass\"}]}], \"affected\": [{\"repo\": \"https://github.com/kberov/Ado\", \"vendor\": \"BEROV\", \"product\": \"Ado::Sessions\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"0.935\"}], \"packageName\": \"Ado\", \"programFiles\": [\"lib/Ado/Session.pm\"], \"collectionURL\": \"https://cpan.org/modules\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"Ado::Sessions::generate_id\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2017-09-02T00:00:00.000Z\", \"value\": \"Last version of Ado was released on CPAN.\"}, {\"lang\": \"en\", \"time\": \"2018-09-24T00:00:00.000Z\", \"value\": \"Announcement that Ado will not be updated anymore.\"}], \"references\": [{\"url\": \"https://github.com/kberov/Ado/issues/112\", \"tags\": [\"issue-tracking\"]}, {\"url\": \"https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz\"}, {\"url\": \"https://security.metacpan.org/docs/guides/random-data-for-security.html\", \"tags\": [\"technical-description\"]}], \"x_generator\": {\"engine\": \"cpansec-cna-tool 0.1\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Ado::Sessions versions through 0.935 for Perl generates insecure session ids.\\n\\nThe session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\\n\\nPredicable session ids could allow an attacker to gain access to systems.\\n\\nNote that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-340\", \"description\": \"CWE-340 Generation of Predictable Numbers or Identifiers\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-338\", \"description\": \"CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator\"}]}], \"providerMetadata\": {\"orgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"shortName\": \"CPANSec\", \"dateUpdated\": \"2026-04-08T05:53:16.963Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-5083\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-08T17:24:13.917Z\", \"dateReserved\": \"2026-03-28T19:14:30.969Z\", \"assignerOrgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"datePublished\": \"2026-04-08T05:53:16.963Z\", \"assignerShortName\": \"CPANSec\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-5083

Vulnerability from fkie_nvd - Published: 2026-04-08 06:16 - Updated: 2026-06-17 10:58

Severity

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

Summary

References

URL	Tags
9b29abf9-4ab0-4765-b253-1875cd9b441e	https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz	Product
9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/kberov/Ado/issues/112	Issue Tracking
9b29abf9-4ab0-4765-b253-1875cd9b441e	https://security.metacpan.org/docs/guides/random-data-for-security.html	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/04/08/7	Mailing List

Impacted products

	Vendor	Product	Version
	berov	ado\	\

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Ado",
          "product": "Ado::Sessions",
          "programFiles": [
            "lib/Ado/Session.pm"
          ],
          "programRoutines": [
            {
              "name": "Ado::Sessions::generate_id"
            }
          ],
          "repo": "https://github.com/kberov/Ado",
          "vendor": "BEROV",
          "versions": [
            {
              "lessThanOrEqual": "0.935",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:berov:ado\\:\\:sessions:*:*:*:*:*:perl:*:*",
              "matchCriteriaId": "1DF482FB-2415-4BAE-B16A-99EA9F0CD85B",
              "versionEndIncluding": "0.935",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Ado::Sessions versions through 0.935 for Perl generates insecure session ids.\n\nThe session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\n\nPredicable session ids could allow an attacker to gain access to systems.\n\nNote that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN."
    }
  ],
  "id": "CVE-2026-5083",
  "lastModified": "2026-06-17T10:58:24.787",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "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": {
          "id": "CVE-2026-5083",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-08T16:08:27.234472Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-08T06:16:29.163",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
        "Product"
      ],
      "url": "https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/kberov/Ado/issues/112"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.metacpan.org/docs/guides/random-data-for-security.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2026/04/08/7"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-338"
        },
        {
          "lang": "en",
          "value": "CWE-340"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

GHSA-3VCR-G3HM-2QR2

Vulnerability from github – Published: 2026-04-08 06:31 – Updated: 2026-04-08 21:33

Details

Ado::Sessions versions through 0.935 for Perl generates insecure session ids.

The session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.

Predicable session ids could allow an attacker to gain access to systems.

Note that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-5083"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-08T06:16:29Z",
    "severity": "MODERATE"
  },
  "details": "Ado::Sessions versions through 0.935 for Perl generates insecure session ids.\n\nThe session id is generated from a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\n\nPredicable session ids could allow an attacker to gain access to systems.\n\nNote that Ado is no longer maintained, and has been removed from the CPAN index. It is still available on BackPAN.",
  "id": "GHSA-3vcr-g3hm-2qr2",
  "modified": "2026-04-08T21:33:26Z",
  "published": "2026-04-08T06:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5083"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kberov/Ado/issues/112"
    },
    {
      "type": "WEB",
      "url": "https://backpan.perl.org/authors/id/B/BE/BEROV/Ado-0.935.tar.gz"
    },
    {
      "type": "WEB",
      "url": "https://security.metacpan.org/docs/guides/random-data-for-security.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/08/7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

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-2026-5083 (GCVE-0-2026-5083)

FKIE_CVE-2026-5083

GHSA-3VCR-G3HM-2QR2

Tags

Sightings

Nomenclature