CVE-2021-32681

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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 }}`."}], "metrics": [{"cvssV3_1": {"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"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-06-17T16:25:11.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.11.8"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.12.5"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.13.2"}], "source": {"advisory": "GHSA-xfrw-hxr5-ghqf", "discovery": "UNKNOWN"}, "title": "Improper escaping of HTML ('Cross-site Scripting') in Wagtail StreamField blocks", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-32681", "STATE": "PUBLIC", "TITLE": "Improper escaping of HTML ('Cross-site Scripting') in Wagtail StreamField blocks"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "wagtail", "version": {"version_data": [{"version_value": "< 2.11.8"}, {"version_value": ">= 2.12, <= 2.12.4"}, {"version_value": ">= 2.13, <= 2.13.1"}]}}]}, "vendor_name": "wagtail"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"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 '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 }}`."}]}, "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 ('Cross-site Scripting')"}]}]}, "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"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T23:25:31.147Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.11.8"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.12.5"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.13.2"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-32681", "datePublished": "2021-06-17T16:25:11.000Z", "dateReserved": "2021-05-12T00:00:00.000Z", "dateUpdated": "2024-08-03T23:25:31.147Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "wagtail", "vendor": "wagtail", "versions": [{"status": "affected", "version": "< 2.11.8"}, {"status": "affected", "version": ">= 2.12, <= 2.12.4"}, {"status": "affected", "version": ">= 2.13, <= 2.13.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*", "matchCriteriaId": "E4AB6050-CE0A-4286-92EB-395F5E4C67BB", "versionEndExcluding": "2.11.8", "vulnerable": true}, {"criteria": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*", "matchCriteriaId": "73073F59-BAAC-41D6-B378-A11053CA5B09", "versionEndIncluding": "2.12.4", "versionStartIncluding": "2.12", "vulnerable": true}, {"criteria": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*", "matchCriteriaId": "805AF284-13BA-4CBB-8D76-E8A0FDFBB59C", "versionEndIncluding": "2.13.1", "versionStartIncluding": "2.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "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 '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 }}`."}, {"lang": "es", "value": "Wagtail es un sistema de administraci\u00f3n de contenidos de c\u00f3digo abierto construido sobre Django. Se presenta una vulnerabilidad de tipo cross-site scripting en versiones 2.13-2.13.1, versiones 2.12-2.12.4 y versiones anteriores a 2.11.8. Cuando es usada la etiqueta de plantilla \"{% include_block %}\" para dar salida al valor de un bloque StreamField de texto plano (\"CharBlock\", \"TextBlock\" o un bloque similar definido por el usuario y derivado de \"FieldBlock\"), y ese bloque no especifica una plantilla para su renderizaci\u00f3n, la salida de la etiqueta no se escapa apropiadamente como HTML. Esto podr\u00eda permitir a usuarios insertar HTML o scripts arbitrarios. Esta vulnerabilidad s\u00f3lo es explotada por usuarios con la habilidad de autor\u00eda del contenido de StreamField (es decir, usuarios con acceso \"editor\" al administrador de Wagtail). Las versiones parcheadas han sido publicadas como Wagtail versi\u00f3n 2.11.8 (para la rama LTS 2.11), Wagtail versi\u00f3n 2.12.5, y Wagtail versi\u00f3n 2.13.2 (para la rama actual 2.13). Como soluci\u00f3n, los implementadores de sitios que no puedan actualizarse a una versi\u00f3n compatible actual deber\u00edan auditar su uso de \"{% include_block %}\" para asegurarse de que no se usa para dar salida a valores \"CharBlock\" / \"TextBlock\" sin plantilla asociada. Tenga en cuenta que esto s\u00f3lo es aplicado cuando \"{% include_block %}\" es usado directamente en ese bloque (los usos de \"include_block\" en un bloque que _contiene_ un CharBlock / TextBlock, como un StructBlock, no est\u00e1n afectados). En estos casos, la etiqueta puede sustituirse por la sintaxis de Django \"{{ ... }}\" - por ejemplo, \"{% include_block my_title_block %}\" se convierte en \"{{ my_title_block }}\""}], "id": "CVE-2021-32681", "lastModified": "2026-06-17T03:53:24.787", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"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, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"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, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"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, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-06-17T17:15:07.510", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.11.8"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.12.5"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.13.2"}, {"source": "security-advisories@github.com", "tags": ["Mitigation", "Third Party Advisory"], "url": "https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.11.8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.12.5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/wagtail/wagtail/releases/tag/v2.13.2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Third Party Advisory"], "url": "https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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