Vulnerability-Lookup

CVE-2020-6802 (GCVE-0-2020-6802)

Vulnerability from cvelistv5 – Published: 2020-03-24 21:13 – Updated: 2024-08-04 09:11

Summary

In Mozilla Bleach before 3.11, a mutation XSS affects users calling bleach.clean with noscript and a raw tag in the allowed/whitelisted tags option.

Severity

6.1 (Medium)


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

CWE

mutation XSS

Assigner

mozilla CNA under the mitre root

CNA scorecard E 38/100 over 679 records in the last 180 days details

References

6 references

URL	Tags
https://github.com/mozilla/bleach/security/adviso…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.checkmarx.com/blog/vulnerabilities-di…	x_refsource_MISC
https://advisory.checkmarx.net/advisory/CX-2020-4276	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	Mozilla Bleach	Affected: <=3.10

Show details on NVD website

JSON

To clipboard

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      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
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      "title": "python-bleach: mutation XSS vulnerability",
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}

OPENSUSE-SU-2024:11219-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2026-09-20 20:13

Summary

python36-bleach-3.3.0-1.4 on GA media

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2020-6802.

CVE-2020-6802

6.1 (Medium)


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

Recommended: 12 products

Open the full advisory

OPENSUSE-SU-2024:11507-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2026-09-20 20:20

Summary

weblate-4.8.1-1.1 on GA media

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2020-6802.

CVE-2020-6802

6.1 (Medium)


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

Recommended: 8 products

Open the full advisory

OPENSUSE-SU-2024:14134-1

Vulnerability from csaf_opensuse - Published: 2024-07-12 00:00 - Updated: 2026-09-20 21:14

Summary

python310-bleach-6.1.0-1.5 on GA media

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2020-6802.

CVE-2020-6802

6.1 (Medium)


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

Recommended: 12 products

Open the full advisory

OPENSUSE-SU-2026:11323-1

Vulnerability from csaf_opensuse - Published: 2026-07-21 00:00 - Updated: 2026-09-17 17:15

Summary

python313-bleach-6.4.0-1.1 on GA media

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2020-6802.

CVE-2020-6802

6.1 (Medium)


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

Recommended: 8 products

Open the full advisory

PYSEC-2020-27

Vulnerability from pysec - Published: 2020-03-24 22:15 - Updated: 2021-03-30 22:15

Details

In Mozilla Bleach before 3.11, a mutation XSS affects users calling bleach.clean with noscript and a raw tag in the allowed/whitelisted tags option.

Impacted products

Name	purl
bleach	pkg:pypi/bleach

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "bleach",
        "purl": "pkg:pypi/bleach"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1",
        "0.1.1",
        "0.1.2",
        "0.2",
        "0.2.1",
        "0.2.2",
        "0.3",
        "0.3.1",
        "0.3.3",
        "0.3.4",
        "0.5.0",
        "0.5.1",
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        "1.0.1",
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        "1.0.3",
        "1.0.4",
        "1.1.0",
        "1.1.1",
        "1.1.2",
        "1.1.3",
        "1.1.4",
        "1.1.5",
        "1.2",
        "1.2.1",
        "1.2.2",
        "1.4",
        "1.4.1",
        "1.4.2",
        "1.4.3",
        "1.5.0",
        "2.0.0",
        "2.1",
        "2.1.1",
        "2.1.2",
        "2.1.3",
        "2.1.4",
        "3.0.0",
        "3.0.1",
        "3.0.2",
        "3.1.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2020-6802",
    "GHSA-q65m-pv3f-wr5r"
  ],
  "details": "In Mozilla Bleach before 3.11, a mutation XSS affects users calling bleach.clean with noscript and a raw tag in the allowed/whitelisted tags option.",
  "id": "PYSEC-2020-27",
  "modified": "2021-03-30T22:15:00Z",
  "published": "2020-03-24T22:15:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/mozilla/bleach/security/advisories/GHSA-q65m-pv3f-wr5r"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OCNLM2MGQTOLCIVVYS2Z5S7KOQJR5JC4/"
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    }
  ]
}

UBUNTU-CVE-2020-6802 (CVE-2020-6802)

Vulnerability from osv_ubuntu – Published: 2020-03-24 22:15 – Updated: 2026-03-06 17:09 – Source website

Details

In Mozilla Bleach before 3.11, a mutation XSS affects users calling bleach.clean with noscript and a raw tag in the allowed/whitelisted tags option.

Severity

6.1 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2020-6802	REPORT
	https://bugzilla.mozilla.org/show_bug.cgi?id=1615315	REPORT
	https://github.com/mozilla/bleach/security/adviso…	REPORT
	https://github.com/mozilla/bleach/commit/f77e0f63…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2020-6802	REPORT
	https://ubuntu.com/security/notices/USN-8077-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "python-bleach",
            "binary_version": "2.1.2-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-bleach",
            "binary_version": "2.1.2-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "python-bleach",
        "purl": "pkg:deb/ubuntu/python-bleach@2.1.2-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.2-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0-1",
        "2.1.2-1"
      ]
    }
  ],
  "aliases": [],
  "details": "In Mozilla Bleach before 3.11, a mutation XSS affects users calling bleach.clean with noscript and a raw tag in the allowed/whitelisted tags option.",
  "id": "UBUNTU-CVE-2020-6802",
  "modified": "2026-03-06T17:09:44Z",
  "published": "2020-03-24T22:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-6802"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1615315"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mozilla/bleach/security/advisories/GHSA-q65m-pv3f-wr5r"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mozilla/bleach/commit/f77e0f6392177a06e46a49abd61a4d9f035e57fd"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-6802"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8077-1"
    }
  ],
  "related": [
    "USN-8077-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-6802"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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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.

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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

CVE-2020-6802 (GCVE-0-2020-6802)

OPENSUSE-SU-2024:11219-1

OPENSUSE-SU-2024:11507-1

OPENSUSE-SU-2024:14134-1

OPENSUSE-SU-2026:11323-1

PYSEC-2020-27

UBUNTU-CVE-2020-6802 (CVE-2020-6802)

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