CVE-2026-32635: @angular/core Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g93w-mfhg-p222",
  "modified" : "2026-05-06T20:33:10Z",
  "published" : "2026-03-13T20:56:18Z",
  "aliases" : [ "CVE-2026-32635" ],
  "summary" : "Angular vulnerable to XSS in i18n attribute bindings",
  "details" : "A Cross-Site Scripting (XSS) vulnerability has been identified in the Angular runtime and compiler. It occurs when the application uses a security-sensitive attribute (for example href on an anchor tag) together with Angular's ability to internationalize attributes. Enabling internationalization for the sensitive attribute by adding `i18n-<attribute>` name bypasses Angular's built-in sanitization mechanism, which when combined with a data binding to untrusted user-generated data can allow an attacker to inject a malicious script. \n\nThe following example illustrates the issue:\n```html\n<a href=\"{{maliciousUrl}}\" i18n-href>Click me</a>\n```\n\nThe following attributes have been confirmed to be vulnerable:\n- `action`\n- `background`\n- `cite`\n- `codebase`\n- `data`\n- `formaction`\n- `href`\n- `itemtype`\n- `longdesc`\n- `poster`\n- `src`\n- `xlink:href`\n\n### Impact\nWhen exploited, this vulnerability allows an attacker to execute arbitrary code within the context of the vulnerable application's domain. This enables:\n- Session Hijacking: Stealing session cookies and authentication tokens.\n- Data Exfiltration: Capturing and transmitting sensitive user data.\n- Unauthorized Actions: Performing actions on behalf of the user.\n\n### Attack Preconditions\n1. The application must use a vulnerable version of Angular.\n2. The application must bind unsanitized user input to one of the attributes mentioned above.\n3. The bound value must be marked for internationalization via the presence of a `i18n-<name>` attribute on the same element.\n\n### Patches\n- 22.0.0-next.3\n- 21.2.4\n- 20.3.18\n- 19.2.20\n\n### Workarounds\nThe primary workaround is to ensure that any data bound to the vulnerable attributes is **never sourced from untrusted user input** (e.g., database, API response, URL parameters) until the patch is applied, or when it is, it shouldn't be marked for internationalization.\n\nAlternatively, users can explicitly sanitize their attributes by passing them through Angular's `DomSanitizer`:\n```ts\nimport {Component, inject, SecurityContext} from '@angular/core';\nimport {DomSanitizer} from '@angular/platform-browser';\n\n@Component({\n  template: `\n    <form action=\"{{url}}\" i18n-action>\n      <button>Submit</button>\n    </form>\n  `,\n})\nexport class App {\n  url: string;\n\n  constructor() {\n    const dangerousUrl = 'javascript:alert(1)';\n    const sanitizer = inject(DomSanitizer);\n    this.url = sanitizer.sanitize(SecurityContext.URL, dangerousUrl) || '';\n  }\n}\n```\n\n### References\n- [Fix 1](https://github.com/angular/angular/pull/67541) \n- [Fix 2](https://github.com/angular/angular/pull/67561)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "22.0.0-next.0"
      }, {
        "fixed" : "22.0.0-next.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "21.0.0-next.0"
      }, {
        "fixed" : "21.2.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "20.0.0-next.0.0.0"
      }, {
        "fixed" : "20.3.18"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "19.0.0-next.0"
      }, {
        "fixed" : "19.2.20"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "17.0.0-next.0"
      }, {
        "last_affected" : "18.2.14"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/compiler"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "22.0.0-next.0"
      }, {
        "fixed" : "22.0.0-next.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/compiler"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "21.0.0-next.0"
      }, {
        "fixed" : "21.2.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/compiler"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "20.0.0-next.0.0.0"
      }, {
        "fixed" : "20.3.18"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/compiler"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "19.0.0-next.0"
      }, {
        "fixed" : "19.2.20"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@angular/compiler"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "17.0.0-next.0"
      }, {
        "last_affected" : "18.2.14"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/angular/angular/security/advisories/GHSA-g93w-mfhg-p222"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-32635"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/angular/angular/pull/67541"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/angular/angular/pull/67561"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/angular/angular/commit/224e60ecb1b90115baa702f1c06edc1d64d86187"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/angular/angular/commit/78dea55351fb305b33a919c43a6b363137eca166"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/angular/angular/commit/8630319f74c9575a21693d875cc7d5252516146d"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/angular/angular/commit/ed2d324f9cc12aab6cfa0569ef10b73243a62c65"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/angular/angular"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-13T20:56:18Z",
    "nvd_published_at" : "2026-03-16T14:19:40Z"
  }
}