gsd-2021-32681
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Wagtail is an open source content management system built on Django. A cross-site scripting vulnerability exists in versions 2.13-2.13.1, versions 2.12-2.12.4, and versions prior to 2.11.8. When the `{% include_block %}` template tag is used to output the value of a plain-text StreamField block (`CharBlock`, `TextBlock` or a similar user-defined block derived from `FieldBlock`), and that block does not specify a template for rendering, the tag output is not properly escaped as HTML. This could allow users to insert arbitrary HTML or scripting. This vulnerability is only exploitable by users with the ability to author StreamField content (i.e. users with 'editor' access to the Wagtail admin). Patched versions have been released as Wagtail 2.11.8 (for the LTS 2.11 branch), Wagtail 2.12.5, and Wagtail 2.13.2 (for the current 2.13 branch). As a workaround, site implementors who are unable to upgrade to a current supported version should audit their use of `{% include_block %}` to ensure it is not used to output `CharBlock` / `TextBlock` values with no associated template. Note that this only applies where `{% include_block %}` is used directly on that block (uses of `include_block` on a block _containing_ a CharBlock / TextBlock, such as a StructBlock, are unaffected). In these cases, the tag can be replaced with Django's `{{ ... }}` syntax - e.g. `{% include_block my_title_block %}` becomes `{{ my_title_block }}`.
Aliases
Aliases
CVE-2021-32681


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-32681",
    "description": "Wagtail is an open source content management system built on Django. A cross-site scripting vulnerability exists in versions 2.13-2.13.1, versions 2.12-2.12.4, and versions prior to 2.11.8. When the `{% include_block %}` template tag is used to output the value of a plain-text StreamField block (`CharBlock`, `TextBlock` or a similar user-defined block derived from `FieldBlock`), and that block does not specify a template for rendering, the tag output is not properly escaped as HTML. This could allow users to insert arbitrary HTML or scripting. This vulnerability is only exploitable by users with the ability to author StreamField content (i.e. users with \u0027editor\u0027 access to the Wagtail admin). Patched versions have been released as Wagtail 2.11.8 (for the LTS 2.11 branch), Wagtail 2.12.5, and Wagtail 2.13.2 (for the current 2.13 branch). As a workaround, site implementors who are unable to upgrade to a current supported version should audit their use of `{% include_block %}` to ensure it is not used to output `CharBlock` / `TextBlock` values with no associated template. Note that this only applies where `{% include_block %}` is used directly on that block (uses of `include_block` on a block _containing_ a CharBlock / TextBlock, such as a StructBlock, are unaffected). In these cases, the tag can be replaced with Django\u0027s `{{ ... }}` syntax - e.g. `{% include_block my_title_block %}` becomes `{{ my_title_block }}`.",
    "id": "GSD-2021-32681"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-32681"
      ],
      "details": "Wagtail is an open source content management system built on Django. A cross-site scripting vulnerability exists in versions 2.13-2.13.1, versions 2.12-2.12.4, and versions prior to 2.11.8. When the `{% include_block %}` template tag is used to output the value of a plain-text StreamField block (`CharBlock`, `TextBlock` or a similar user-defined block derived from `FieldBlock`), and that block does not specify a template for rendering, the tag output is not properly escaped as HTML. This could allow users to insert arbitrary HTML or scripting. This vulnerability is only exploitable by users with the ability to author StreamField content (i.e. users with \u0027editor\u0027 access to the Wagtail admin). Patched versions have been released as Wagtail 2.11.8 (for the LTS 2.11 branch), Wagtail 2.12.5, and Wagtail 2.13.2 (for the current 2.13 branch). As a workaround, site implementors who are unable to upgrade to a current supported version should audit their use of `{% include_block %}` to ensure it is not used to output `CharBlock` / `TextBlock` values with no associated template. Note that this only applies where `{% include_block %}` is used directly on that block (uses of `include_block` on a block _containing_ a CharBlock / TextBlock, such as a StructBlock, are unaffected). In these cases, the tag can be replaced with Django\u0027s `{{ ... }}` syntax - e.g. `{% include_block my_title_block %}` becomes `{{ my_title_block }}`.",
      "id": "GSD-2021-32681",
      "modified": "2023-12-13T01:23:08.809737Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-32681",
        "STATE": "PUBLIC",
        "TITLE": "Improper escaping of HTML (\u0027Cross-site Scripting\u0027) in Wagtail StreamField blocks"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "wagtail",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 2.11.8"
                        },
                        {
                          "version_value": "\u003e= 2.12, \u003c= 2.12.4"
                        },
                        {
                          "version_value": "\u003e= 2.13, \u003c= 2.13.1"
                        }
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              "vendor_name": "wagtail"
            }
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      "description": {
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          {
            "lang": "eng",
            "value": "Wagtail is an open source content management system built on Django. A cross-site scripting vulnerability exists in versions 2.13-2.13.1, versions 2.12-2.12.4, and versions prior to 2.11.8. When the `{% include_block %}` template tag is used to output the value of a plain-text StreamField block (`CharBlock`, `TextBlock` or a similar user-defined block derived from `FieldBlock`), and that block does not specify a template for rendering, the tag output is not properly escaped as HTML. This could allow users to insert arbitrary HTML or scripting. This vulnerability is only exploitable by users with the ability to author StreamField content (i.e. users with \u0027editor\u0027 access to the Wagtail admin). Patched versions have been released as Wagtail 2.11.8 (for the LTS 2.11 branch), Wagtail 2.12.5, and Wagtail 2.13.2 (for the current 2.13 branch). As a workaround, site implementors who are unable to upgrade to a current supported version should audit their use of `{% include_block %}` to ensure it is not used to output `CharBlock` / `TextBlock` values with no associated template. Note that this only applies where `{% include_block %}` is used directly on that block (uses of `include_block` on a block _containing_ a CharBlock / TextBlock, such as a StructBlock, are unaffected). In these cases, the tag can be replaced with Django\u0027s `{{ ... }}` syntax - e.g. `{% include_block my_title_block %}` becomes `{{ my_title_block }}`."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf",
            "refsource": "CONFIRM",
            "url": "https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf"
          },
          {
            "name": "https://github.com/wagtail/wagtail/releases/tag/v2.11.8",
            "refsource": "MISC",
            "url": "https://github.com/wagtail/wagtail/releases/tag/v2.11.8"
          },
          {
            "name": "https://github.com/wagtail/wagtail/releases/tag/v2.12.5",
            "refsource": "MISC",
            "url": "https://github.com/wagtail/wagtail/releases/tag/v2.12.5"
          },
          {
            "name": "https://github.com/wagtail/wagtail/releases/tag/v2.13.2",
            "refsource": "MISC",
            "url": "https://github.com/wagtail/wagtail/releases/tag/v2.13.2"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-xfrw-hxr5-ghqf",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c2.11.8||\u003e=2.12,\u003c=2.12.4||\u003e=2.13,\u003c=2.13.1",
          "affected_versions": "All versions before 2.11.8, all versions starting from 2.12 up to 2.12.4, all versions starting from 2.13 up to 2.13.1",
          "cvss_v2": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-79",
            "CWE-937"
          ],
          "date": "2021-06-23",
          "description": "A XSS vulnerability exists in Wagtail, an open source content management system built on Django.",
          "fixed_versions": [
            "2.11.8",
            "2.12.5",
            "2.13.2"
          ],
          "identifier": "CVE-2021-32681",
          "identifiers": [
            "CVE-2021-32681",
            "GHSA-xfrw-hxr5-ghqf"
          ],
          "not_impacted": "All versions starting from 2.11.8 before 2.12, all versions after 2.12.4 before 2.13, all versions after 2.13.1",
          "package_slug": "pypi/wagtail",
          "pubdate": "2021-06-17",
          "solution": "Upgrade to versions 2.11.8, 2.12.5, 2.13.2 or above.",
          "title": "Cross-site Scripting",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-32681"
          ],
          "uuid": "1d1dd66b-edf8-4f68-9d8a-039d32486855"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.11.8",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "2.12.4",
                "versionStartIncluding": "2.12",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "2.13.1",
                "versionStartIncluding": "2.13",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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          "ID": "CVE-2021-32681"
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        "description": {
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              "value": "Wagtail is an open source content management system built on Django. A cross-site scripting vulnerability exists in versions 2.13-2.13.1, versions 2.12-2.12.4, and versions prior to 2.11.8. When the `{% include_block %}` template tag is used to output the value of a plain-text StreamField block (`CharBlock`, `TextBlock` or a similar user-defined block derived from `FieldBlock`), and that block does not specify a template for rendering, the tag output is not properly escaped as HTML. This could allow users to insert arbitrary HTML or scripting. This vulnerability is only exploitable by users with the ability to author StreamField content (i.e. users with \u0027editor\u0027 access to the Wagtail admin). Patched versions have been released as Wagtail 2.11.8 (for the LTS 2.11 branch), Wagtail 2.12.5, and Wagtail 2.13.2 (for the current 2.13 branch). As a workaround, site implementors who are unable to upgrade to a current supported version should audit their use of `{% include_block %}` to ensure it is not used to output `CharBlock` / `TextBlock` values with no associated template. Note that this only applies where `{% include_block %}` is used directly on that block (uses of `include_block` on a block _containing_ a CharBlock / TextBlock, such as a StructBlock, are unaffected). In these cases, the tag can be replaced with Django\u0027s `{{ ... }}` syntax - e.g. `{% include_block my_title_block %}` becomes `{{ my_title_block }}`."
            }
          ]
        },
        "problemtype": {
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              "description": [
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/wagtail/wagtail/releases/tag/v2.11.8",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/wagtail/wagtail/releases/tag/v2.11.8"
            },
            {
              "name": "https://github.com/wagtail/wagtail/releases/tag/v2.12.5",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/wagtail/wagtail/releases/tag/v2.12.5"
            },
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              "name": "https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf",
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                "Third Party Advisory"
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              "refsource": "MISC",
              "tags": [
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                "Third Party Advisory"
              ],
              "url": "https://github.com/wagtail/wagtail/releases/tag/v2.13.2"
            }
          ]
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 6.8,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.3,
          "impactScore": 2.7
        }
      },
      "lastModifiedDate": "2021-06-23T12:28Z",
      "publishedDate": "2021-06-17T17:15Z"
    }
  }
}


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