Vulnerability-Lookup

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

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{
  "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"
    }
  ]
}

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 (v2.0.3)

CWE

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

Assigner

CPANSec

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
BURAK	GD::SecurityImage	Affected: 0 , ≤ 1.75 (custom)

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JSON

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{
  "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-13082",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-17T17:29:10.397745Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-17T17:29:23.536Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-338",
              "description": "CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-804",
              "description": "CWE-804 Guessable CAPTCHA",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-17T12:54:07.177Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "related"
          ],
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-40916"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://security.metacpan.org/patches/G/GD-SecurityImage/1.75/CVE-2026-13082-r1.patch"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "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": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "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",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-P496-RGMP-V9MG

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

Tags

Sightings

Nomenclature