Vulnerability-Lookup

PYSEC-2026-1229

Vulnerability from pysec - Published: 2026-07-07 14:34 - Updated: 2026-07-07 17:23

Details

An improper access control vulnerability exists in janeczku/calibre-web. The affected version allows users without public shelf permissions to create public shelves. The vulnerability is due to the create_shelf method in shelf.py not verifying if the user has the necessary permissions to create a public shelf. This issue can lead to unauthorized actions being performed by users.

Severity

5.4 (Medium)


                  
                    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Impacted products

Name	purl
calibreweb	pkg:pypi/calibreweb

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "calibreweb",
        "purl": "pkg:pypi/calibreweb"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.12",
        "0.6.13",
        "0.6.14"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3987",
    "GHSA-fj5v-w2jp-wqvj"
  ],
  "details": "An improper access control vulnerability exists in janeczku/calibre-web. The affected version allows users without public shelf permissions to create public shelves. The vulnerability is due to the `create_shelf` method in `shelf.py` not verifying if the user has the necessary permissions to create a public shelf. This issue can lead to unauthorized actions being performed by users.",
  "id": "PYSEC-2026-1229",
  "modified": "2026-07-07T17:23:52.662352Z",
  "published": "2026-07-07T14:34:44.645886Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3987"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janeczku/calibre-web/commit/bcdc97641447965af486964537f3821f47b28874"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/janeczku/calibre-web"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/29fcc091-87b6-43bc-ab4b-3c0bec3f71df"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/calibreweb"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-fj5v-w2jp-wqvj"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Improper Access Control in janeczku/calibre-web"
}

CVE-2021-3987 (GCVE-0-2021-3987)

Vulnerability from cvelistv5 – Published: 2024-11-15 10:52 – Updated: 2024-11-15 18:28

Title

Improper Access Control in janeczku/calibre-web

Summary

An improper access control vulnerability exists in janeczku/calibre-web. The affected version allows users without public shelf permissions to create public shelves. The vulnerability is due to the `create_shelf` method in `shelf.py` not verifying if the user has the necessary permissions to create a public shelf. This issue can lead to unauthorized actions being performed by users.

Severity

5.4 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-284 - Improper Access Control

Assigner

@huntr_ai

References

2 references

URL	Tags
https://huntr.com/bounties/29fcc091-87b6-43bc-ab4…
https://github.com/janeczku/calibre-web/commit/bc…

Impacted products

2 products

Vendor	Product	Version
janeczku	janeczku/calibre-web	Affected: unspecified , ≤ latest (custom)
calibre-web_project	calibre-web	Affected: 0 , < * (custom) cpe:2.3:a:calibre-web_project:calibre-web:-:::::::*

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:calibre-web_project:calibre-web:-:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "calibre-web",
            "vendor": "calibre-web_project",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-3987",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-15T18:27:02.281125Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-15T18:28:12.925Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "janeczku/calibre-web",
          "vendor": "janeczku",
          "versions": [
            {
              "lessThanOrEqual": "latest",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An improper access control vulnerability exists in janeczku/calibre-web. The affected version allows users without public shelf permissions to create public shelves. The vulnerability is due to the `create_shelf` method in `shelf.py` not verifying if the user has the necessary permissions to create a public shelf. This issue can lead to unauthorized actions being performed by users."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284 Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-15T10:57:09.048Z",
        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
        "shortName": "@huntr_ai"
      },
      "references": [
        {
          "url": "https://huntr.com/bounties/29fcc091-87b6-43bc-ab4b-3c0bec3f71df"
        },
        {
          "url": "https://github.com/janeczku/calibre-web/commit/bcdc97641447965af486964537f3821f47b28874"
        }
      ],
      "source": {
        "advisory": "29fcc091-87b6-43bc-ab4b-3c0bec3f71df",
        "discovery": "EXTERNAL"
      },
      "title": "Improper Access Control in janeczku/calibre-web"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
    "assignerShortName": "@huntr_ai",
    "cveId": "CVE-2021-3987",
    "datePublished": "2024-11-15T10:52:29.478Z",
    "dateReserved": "2021-11-20T12:01:47.041Z",
    "dateUpdated": "2024-11-15T18:28:12.925Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-FJ5V-W2JP-WQVJ

Vulnerability from github – Published: 2024-11-15 12:31 – Updated: 2024-11-15 20:51

Summary

Improper Access Control in janeczku/calibre-web

Details

Severity

5.4 (Medium)


                  
                    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "calibreweb"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-3987"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284",
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-11-15T20:51:30Z",
    "nvd_published_at": "2024-11-15T11:15:06Z",
    "severity": "MODERATE"
  },
  "details": "An improper access control vulnerability exists in janeczku/calibre-web. The affected version allows users without public shelf permissions to create public shelves. The vulnerability is due to the `create_shelf` method in `shelf.py` not verifying if the user has the necessary permissions to create a public shelf. This issue can lead to unauthorized actions being performed by users.",
  "id": "GHSA-fj5v-w2jp-wqvj",
  "modified": "2024-11-15T20:51:30Z",
  "published": "2024-11-15T12:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3987"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janeczku/calibre-web/commit/bcdc97641447965af486964537f3821f47b28874"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/janeczku/calibre-web"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/29fcc091-87b6-43bc-ab4b-3c0bec3f71df"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Improper Access Control in janeczku/calibre-web"
}

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

PYSEC-2026-1229

CVE-2021-3987 (GCVE-0-2021-3987)

GHSA-FJ5V-W2JP-WQVJ

Tags

Sightings

Nomenclature