{"id":"CVE-2023-41049","aliases":["EUVD-2023-2603","GHSA-vp4f-wxgw-7x8x"],"status":"published","title":"Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client","description":"@dcl/single-sign-on-client is an open source npm library which deals with single sign on authentication flows. Improper input validation in the `init` function allows arbitrary javascript to be executed using  the `javascript:` prefix. This vulnerability has been patched on version `0.1.0`. Users are advised to upgrade. Users unable to upgrade should limit untrusted user input to the `init` function.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00457,"percentile":0.4006,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2023-09-01T19:35:09Z","modified":"2026-10-28T02:30:59Z","fixes":[{"ecosystem":"npm","package":"@dcl/single-sign-on-client","fixed_in":["0.1.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@dcl/single-sign-on-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.1.0"}]}]},{"source":"osv","ecosystem":"npm","package":"@dcl/single-sign-on-client","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.1.0"}]}]}],"products":[{"vendor":"decentraland","product":"single-sign-on-client"},{"vendor":"decentraland","product":"single_sign_on_client"}],"references":[{"url":"https://github.com/decentraland/single-sign-on-client/security/advisories/GHSA-vp4f-wxgw-7x8x","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/decentraland/single-sign-on-client/commit/bd20ea9533d0cda30809d929db85b1b76cef855a","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-41049","tags":["advisory"]},{"url":"https://github.com/decentraland/single-sign-on-client/pull/2","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vp4f-wxgw-7x8x"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/41xxx/CVE-2023-41049.json","tags":["advisory"]},{"url":"https://github.com/decentraland/single-sign-on-client","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-41049","title":"Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client","description":"@dcl/single-sign-on-client is an open source npm library which deals with single sign on authentication flows. Improper input validation in the `init` function allows arbitrary javascript to be executed using  the `javascript:` prefix. This vulnerability has been patched on version `0.1.0`. Users are advised to upgrade. Users unable to upgrade should limit untrusted user input to the `init` function.","status":"published","published":"2023-09-01T19:35:09.224Z","modified":"2024-10-01T13:08:08.826Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:18.88314Z"}],"euvd":[{"id":"EUVD-2023-2603","description":"@dcl/single-sign-on-client is an open source npm library which deals with single sign on authentication flows. Improper input validation in the `init` function allows arbitrary javascript to be executed using  the `javascript:` prefix. This vulnerability has been patched on version `0.1.0`. Users are advised to upgrade. Users unable to upgrade should limit untrusted user input to the `init` function.","status":"published","published":"2023-09-01T19:35:09Z","modified":"2024-10-01T13:08:08Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-03T00:28:01.909154Z"}],"ghsa":[{"id":"GHSA-vp4f-wxgw-7x8x","title":"Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client","description":"### Impact\nImproper input validation in the `init` function allows arbitrary javascript to be executed using  the `javascript:` prefix\n\n```ts\n    SSO.init('javascript:alert(\"javascript successfully injected\")')\n```\n\n### Patches\n\nThis vulnerability was patched on version `0.1.0`\n\n### Workarounds\n\nThis vulnerability can be prevented if user input correctly sanitized or there is no user input pass to the `init` function\n","status":"published","published":"2023-09-04T16:36:27Z","modified":"2023-11-05T05:04:46Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:13.301199Z"}],"nvd":[{"id":"CVE-2023-41049","description":"@dcl/single-sign-on-client is an open source npm library which deals with single sign on authentication flows. Improper input validation in the `init` function allows arbitrary javascript to be executed using  the `javascript:` prefix. This vulnerability has been patched on version `0.1.0`. Users are advised to upgrade. Users unable to upgrade should limit untrusted user input to the `init` function.","status":"published","published":"2023-09-01T20:15:07.873Z","modified":"2026-06-17T06:20:17.83Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"},{"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":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:08:27.181588Z"}],"osv":[{"id":"CVE-2023-41049","title":"Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client","description":"@dcl/single-sign-on-client is an open source npm library which deals with single sign on authentication flows. Improper input validation in the `init` function allows arbitrary javascript to be executed using  the `javascript:` prefix. This vulnerability has been patched on version `0.1.0`. Users are advised to upgrade. Users unable to upgrade should limit untrusted user input to the `init` function.","status":"published","published":"2023-09-01T19:35:09.224Z","modified":"2026-10-28T02:30:59.885184774Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:33.244128Z"},{"id":"GHSA-vp4f-wxgw-7x8x","title":"Improper Neutralization of Script in Attributes in @dcl/single-sign-on-client","description":"### Impact\nImproper input validation in the `init` function allows arbitrary javascript to be executed using  the `javascript:` prefix\n\n```ts\n    SSO.init('javascript:alert(\"javascript successfully injected\")')\n```\n\n### Patches\n\nThis vulnerability was patched on version `0.1.0`\n\n### Workarounds\n\nThis vulnerability can be prevented if user input correctly sanitized or there is no user input pass to the `init` function\n","status":"published","published":"2023-09-04T16:36:27Z","modified":"2026-09-10T03:50:03.280301481Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:57.348035Z"}]}}