{"items":[{"id":"NVI-00018375","kind":"vulnerability","title":"Angular Stored XSS Vulnerability via SVG Animation, SVG URL and MathML Attributes","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-v4hv-rgfq-gp49","CVE-2025-66412"],"plain_summary":"GitHub lists this reviewed advisory for @angular/compiler, @angular/compiler, @angular/compiler, @angular/compiler. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-18fb80c38f0136eb690ad91a7451d0ab"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-18fb80c38f0136eb690ad91a7451d0ab","url":"https://github.com/advisories/GHSA-v4hv-rgfq-gp49","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-v4hv-rgfq-gp49","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T20:56:39.448Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-18fb80c38f0136eb690ad91a7451d0ab"],"technology":"@angular/compiler","known_exclusions":[],"conditions_summary":"A **Stored Cross-Site Scripting (XSS)** vulnerability has been identified in the **Angular Template Compiler**. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain `javascript:` URLs) as requiring strict URL security, enabling the injection of malicious scripts.\n\nAdditionally, a related vulnerability exists involving SVG animation elements (``, ``, ``, ``). The `attributeName` attribute on these elements was not properly validated, allowing attackers to dynamically target security-sensitive attributes like `href` or `xlink:href` on other elements. By binding `attributeName` to \"href\" and providing a `javascript:` URL in the `values` or `to` attribute, an attacker could bypass sanitization and execute arbitrary code.\n\nAttributes confirmed to be vulnerable include:\n*   SVG-related attrib","public_affected_ranges":[">= 21.0.0-next.0, < 21.0.2"]},{"certainty":"source_listed","source_ids":["sr-18fb80c38f0136eb690ad91a7451d0ab"],"technology":"@angular/compiler","known_exclusions":[],"conditions_summary":"A **Stored Cross-Site Scripting (XSS)** vulnerability has been identified in the **Angular Template Compiler**. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain `javascript:` URLs) as requiring strict URL security, enabling the injection of malicious scripts.\n\nAdditionally, a related vulnerability exists involving SVG animation elements (``, ``, ``, ``). The `attributeName` attribute on these elements was not properly validated, allowing attackers to dynamically target security-sensitive attributes like `href` or `xlink:href` on other elements. By binding `attributeName` to \"href\" and providing a `javascript:` URL in the `values` or `to` attribute, an attacker could bypass sanitization and execute arbitrary code.\n\nAttributes confirmed to be vulnerable include:\n*   SVG-related attrib","public_affected_ranges":[">= 20.0.0-next.0, < 20.3.15"]},{"certainty":"source_listed","source_ids":["sr-18fb80c38f0136eb690ad91a7451d0ab"],"technology":"@angular/compiler","known_exclusions":[],"conditions_summary":"A **Stored Cross-Site Scripting (XSS)** vulnerability has been identified in the **Angular Template Compiler**. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain `javascript:` URLs) as requiring strict URL security, enabling the injection of malicious scripts.\n\nAdditionally, a related vulnerability exists involving SVG animation elements (``, ``, ``, ``). The `attributeName` attribute on these elements was not properly validated, allowing attackers to dynamically target security-sensitive attributes like `href` or `xlink:href` on other elements. By binding `attributeName` to \"href\" and providing a `javascript:` URL in the `values` or `to` attribute, an attacker could bypass sanitization and execute arbitrary code.\n\nAttributes confirmed to be vulnerable include:\n*   SVG-related attrib","public_affected_ranges":[">= 19.0.0-next.0, < 19.2.17"]},{"certainty":"source_listed","source_ids":["sr-18fb80c38f0136eb690ad91a7451d0ab"],"technology":"@angular/compiler","known_exclusions":[],"conditions_summary":"A **Stored Cross-Site Scripting (XSS)** vulnerability has been identified in the **Angular Template Compiler**. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain `javascript:` URLs) as requiring strict URL security, enabling the injection of malicious scripts.\n\nAdditionally, a related vulnerability exists involving SVG animation elements (``, ``, ``, ``). The `attributeName` attribute on these elements was not properly validated, allowing attackers to dynamically target security-sensitive attributes like `href` or `xlink:href` on other elements. By binding `attributeName` to \"href\" and providing a `javascript:` URL in the `values` or `to` attribute, an attacker could bypass sanitization and execute arbitrary code.\n\nAttributes confirmed to be vulnerable include:\n*   SVG-related attrib","public_affected_ranges":["<= 18.2.14"]}],"null_published_at":"2026-11-07T07:07:39.827Z","source_updated_at":"2026-06-09T10:55:55.000Z","source_disclosed_at":"2025-12-02T01:20:30.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-06T20:56:39.448Z"}],"next_cursor":null,"snapshot_revision":"42594"}