{"id":"CVE-2021-46871","aliases":["EUVD-2023-0339","GHSA-5g2h-9x5v-5h3x","GHSA-j3gg-r6gp-95q2"],"status":"published","title":"phoenix_html allows Cross-site Scripting in HEEx class attributes","description":"tag.ex in Phoenix Phoenix.HTML (aka phoenix_html) before 3.0.4 allows XSS in HEEx class 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Party Advisory","fix","advisory"]},{"url":"https://github.com/phoenixframework/phoenix_html/commit/62a0139fb716bcdce697f6221244bd81d321d620","tags":["x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-46871","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5g2h-9x5v-5h3x"},{"url":"https://github.com/phoenixframework/phoenix_html","tags":["web","package"]}],"sources":{"cve":[{"id":"CVE-2021-46871","description":"tag.ex in Phoenix Phoenix.HTML (aka phoenix_html) before 3.0.4 allows XSS in HEEx class attributes.","status":"published","published":"2023-01-10T00:00:00Z","modified":"2025-04-09T17:21:41.118Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2023-0339","description":"tag.ex in Phoenix Phoenix.HTML (aka phoenix_html) before 3.0.4 allows XSS in 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attributes.","status":"published","published":"2023-01-10T06:15:09.87Z","modified":"2026-10-20T10:55:11.818072971Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:22.18434Z"},{"id":"GHSA-5g2h-9x5v-5h3x","title":"phoenix_html allows Cross-site Scripting in HEEx class attributes","description":"tag.ex in Phoenix Phoenix.HTML (aka phoenix_html) before 3.0.4 allows XSS in HEEx class attributes","status":"published","published":"2023-01-10T06:30:25Z","modified":"2026-09-10T03:49:56.60367608Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:38.213481Z"},{"id":"GHSA-j3gg-r6gp-95q2","title":"XSS in HEEx class attributes","description":"The `class` attribute was not protected against XSS attacks when using 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