github - ghsa-m6m7-mf2p-99p5

GHSA-M6M7-MF2P-99P5

Vulnerability from github – Published: 2021-12-08 00:01 – Updated: 2022-05-04 00:00

Details

calibre before 5.32.0 contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service) in html_preprocess_rules in ebooks/conversion/preprocess.py.

Severity ?

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-44686"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-07T00:15:00Z",
    "severity": "HIGH"
  },
  "details": "calibre before 5.32.0 contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service) in html_preprocess_rules in ebooks/conversion/preprocess.py.",
  "id": "GHSA-m6m7-mf2p-99p5",
  "modified": "2022-05-04T00:00:57Z",
  "published": "2021-12-08T00:01:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-44686"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dwisiswant0/advisory/issues/18"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/calibre/+bug/1951979"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kovidgoyal/calibre/compare/v5.31.1...v5.32.0"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W7QKFPYJ23KG6WJ5NIYAM4N2NWZCLQGL"
    }
  ],
  "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:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-44686 (GCVE-0-2021-44686)

Vulnerability from cvelistv5 – Published: 2021-12-06 23:41 – Updated: 2025-11-04 16:09

Summary

calibre before 5.32.0 contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service) in html_preprocess_rules in ebooks/conversion/preprocess.py.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://bugs.launchpad.net/calibre/+bug/1951979	x_refsource_MISC
	https://github.com/dwisiswant0/advisory/issues/18	x_refsource_MISC
	https://github.com/kovidgoyal/calibre/compare/v5.…	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA

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Sightings

Author	Source	Type	Date

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-M6M7-MF2P-99P5

CVE-2021-44686 (GCVE-0-2021-44686)

Tags

Sightings

Nomenclature