PYSEC-2026-304

Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-07-01 20:22
VLAI
Details

calibreweb prior to version 0.6.17 is vulnerable to server-side request forgery (SSRF). This is due to an incomplete fix for CVE-2022-0339. The blacklist does not check for 0.0.0.0, which would result in a payload of 0.0.0.0 resolving to localhost.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impacted products
Name purl
calibreweb pkg:pypi/calibreweb
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "calibreweb",
        "purl": "pkg:pypi/calibreweb"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.17"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.12",
        "0.6.13",
        "0.6.14",
        "0.6.15",
        "0.6.16"
      ]
    }
  ],
  "aliases": [
    "CVE-2022-0766",
    "GHSA-2647-c639-qv2j"
  ],
  "details": "calibreweb prior to version 0.6.17 is vulnerable to server-side request forgery (SSRF). This is due to an incomplete fix for [CVE-2022-0339](https://github.com/advisories/GHSA-4w8p-x6g8-fv64). The blacklist does not check for `0.0.0.0`, which would result in a payload of `0.0.0.0` resolving to `localhost`.",
  "id": "PYSEC-2026-304",
  "modified": "2026-07-01T20:22:50.148948Z",
  "published": "2026-06-29T11:50:32.006359Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0766"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janeczku/calibre-web/commit/965352c8d96c9eae7a6867ff76b0db137d04b0b8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/janeczku/calibre-web"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/7f2a5bb4-e6c7-4b6a-b8eb-face9e3add7b"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/calibreweb"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-2647-c639-qv2j"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Server-Side Request Forgery in calibreweb"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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