{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-85271", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-03T16:37:49.260Z", "datePublished": "2026-09-18T20:38:40.422Z", "dateUpdated": "2026-09-18T20:38:40.422Z"}, "containers": {"cna": {"title": "Open edX Platform: Stored CSS Injection in Email Digest Notifications via Unsanitized Thread Title (incomplete patch of CVE-2026-42857)", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/openedx/openedx-platform/security/advisories/GHSA-rv5w-f4r5-h77g", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/openedx/openedx-platform/security/advisories/GHSA-rv5w-f4r5-h77g"}, {"name": "https://github.com/openedx/openedx-platform/commit/2af03d21b4142e53e375c7f3699b313e92ec5121", "tags": ["x_refsource_MISC"], "url": "https://github.com/openedx/openedx-platform/commit/2af03d21b4142e53e375c7f3699b313e92ec5121"}, {"name": "https://github.com/openedx/openedx-platform/commit/52f2b3bb3e6fac2601c29e8f926c81498d20bb0b", "tags": ["x_refsource_MISC"], "url": "https://github.com/openedx/openedx-platform/commit/52f2b3bb3e6fac2601c29e8f926c81498d20bb0b"}, {"name": "https://github.com/openedx/openedx-platform/commit/5eae6e51a8797cd3b87cc132f5de73d52561c4d7", "tags": ["x_refsource_MISC"], "url": "https://github.com/openedx/openedx-platform/commit/5eae6e51a8797cd3b87cc132f5de73d52561c4d7"}, {"name": "https://github.com/openedx/openedx-platform/releases/tag/release/ulmo.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/openedx/openedx-platform/releases/tag/release/ulmo.4"}, {"name": "https://github.com/openedx/openedx-platform/releases/tag/release/verawood.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/openedx/openedx-platform/releases/tag/release/verawood.1"}], "affected": [{"vendor": "openedx", "product": "openedx-platform", "versions": [{"version": ">= release/redwood.1, < release/ulmo.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-18T20:38:40.422Z"}, "descriptions": [{"lang": "en", "value": "Open edX Platform enables the authoring and delivery of online learning at any scale. From Redwood until Ulmo and Verawood.1, the add_additional_attributes_to_notifications function in openedx/core/djangoapps/notifications/email/utils.py assigns notification content without sanitizing discussion-title values produced by get_notification_content in openedx/core/djangoapps/notifications/base_notification.py. An enrolled student can place CSS-capable markup in the post_title value supplied by lms/djangoapps/discussion/rest_api/discussions_notifications.py. Digest and batched-email rendering then passes that value through openedx/core/djangoapps/notifications/templates/notifications/digest_content.html as safe HTML, allowing email-open tracking and content spoofing or phishing when another learner opens a CSS-rendering client. The immediate-email path is not affected because it strips title markup and renders a separately sanitized body. This issue is fixed in Ulmo and Verawood.1."}], "source": {"advisory": "GHSA-rv5w-f4r5-h77g", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "openedx-platform", "vendor": "openedx", "versions": [{"status": "affected", "version": ">= release/redwood.1, < release/ulmo.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Open edX Platform enables the authoring and delivery of online learning at any scale. From Redwood until Ulmo and Verawood.1, the add_additional_attributes_to_notifications function in openedx/core/djangoapps/notifications/email/utils.py assigns notification content without sanitizing discussion-title values produced by get_notification_content in openedx/core/djangoapps/notifications/base_notification.py. An enrolled student can place CSS-capable markup in the post_title value supplied by lms/djangoapps/discussion/rest_api/discussions_notifications.py. Digest and batched-email rendering then passes that value through openedx/core/djangoapps/notifications/templates/notifications/digest_content.html as safe HTML, allowing email-open tracking and content spoofing or phishing when another learner opens a CSS-rendering client. The immediate-email path is not affected because it strips title markup and renders a separately sanitized body. This issue is fixed in Ulmo and Verawood.1."}], "id": "CVE-2026-85271", "lastModified": "2026-09-18T21:18:44.630", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-18T21:18:44.630", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/openedx/openedx-platform/commit/2af03d21b4142e53e375c7f3699b313e92ec5121"}, {"source": "security-advisories@github.com", "url": "https://github.com/openedx/openedx-platform/commit/52f2b3bb3e6fac2601c29e8f926c81498d20bb0b"}, {"source": "security-advisories@github.com", "url": "https://github.com/openedx/openedx-platform/commit/5eae6e51a8797cd3b87cc132f5de73d52561c4d7"}, {"source": "security-advisories@github.com", "url": "https://github.com/openedx/openedx-platform/releases/tag/release/ulmo.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/openedx/openedx-platform/releases/tag/release/verawood.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/openedx/openedx-platform/security/advisories/GHSA-rv5w-f4r5-h77g"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}