{"id":"CVE-2023-23630","aliases":["EUVD-2023-0593","GHSA-xrh7-m5pp-39r6"],"status":"published","title":"Cross-site (XSS) vulnerability with Express API in Eta","description":"Eta is an embedded JS templating engine that works inside Node, Deno, and the browser. XSS attack - anyone using the Express API is impacted. The problem has been resolved. Users should upgrade to version 2.0.0. As a workaround, don't pass user supplied things directly to `res.render`.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00642,"percentile":0.51301,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2023-01-31T22:39:40Z","modified":"2026-10-28T02:31:07Z","fixes":[{"ecosystem":"npm","package":"eta","fixed_in":["2.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"eta","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.0"}]}]},{"source":"osv","ecosystem":"npm","package":"eta","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.0.0"}]}]}],"products":[{"vendor":"eta-dev","product":"eta"},{"vendor":"eta.js","product":"eta"}],"references":[{"url":"https://github.com/eta-dev/eta/security/advisories/GHSA-xrh7-m5pp-39r6","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/eta-dev/eta/commit/5651392462ee0ff19d77c8481081a99e5b9138dd","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/eta-dev/eta/releases/tag/v2.0.0","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-23630","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xrh7-m5pp-39r6"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/23xxx/CVE-2023-23630.json","tags":["advisory"]},{"url":"https://github.com/eta-dev/eta","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-23630","title":"Cross-site (XSS) vulnerability with Express API in Eta","description":"Eta is an embedded JS templating engine that works inside Node, Deno, and the browser. XSS attack - anyone using the Express API is impacted. The problem has been resolved. Users should upgrade to version 2.0.0. As a workaround, don't pass user supplied things directly to `res.render`. \n","status":"published","published":"2023-02-01T00:38:29.697Z","modified":"2025-03-10T21:17:25.86Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:21.232549Z"}],"euvd":[{"id":"EUVD-2023-0593","description":"Eta is an embedded JS templating engine that works inside Node, Deno, and the browser. XSS attack - anyone using the Express API is impacted. The problem has been resolved. Users should upgrade to version 2.0.0. As a workaround, don't pass user supplied things directly to `res.render`. \n","status":"published","published":"2023-02-01T00:38:29Z","modified":"2025-03-10T21:17:25Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T20:53:08.584552Z"}],"ghsa":[{"id":"GHSA-xrh7-m5pp-39r6","title":"XSS Attack with Express API","description":"### Impact\nXSS attack - anyone using the Express API is impacted\n\n### Patches\nThe problem has been resolved. Users should upgrade to version 2.0.0.\n\n### Workarounds\nDon't pass user supplied data directly to `res.renderFile`. \n\n### References\n_Are there any links users can visit to find out more?_\nSee https://github.com/eta-dev/eta/releases/tag/v2.0.0","status":"published","published":"2023-01-31T22:39:40Z","modified":"2023-02-08T22:37:39Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:36:44.81167Z"}],"nvd":[{"id":"CVE-2023-23630","description":"Eta is an embedded JS templating engine that works inside Node, Deno, and the browser. XSS attack - anyone using the Express API is impacted. The problem has been resolved. Users should upgrade to version 2.0.0. As a workaround, don't pass user supplied things directly to `res.render`. \n","status":"published","published":"2023-02-01T01:15:08.937Z","modified":"2026-06-17T05:37:37.55Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","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":"2026-11-02T14:07:46.064662Z"}],"osv":[{"id":"CVE-2023-23630","title":"Cross-site (XSS) vulnerability with Express API in Eta","description":"Eta is an embedded JS templating engine that works inside Node, Deno, and the browser. XSS attack - anyone using the Express API is impacted. The problem has been resolved. Users should upgrade to version 2.0.0. As a workaround, don't pass user supplied things directly to `res.render`. \n","status":"published","published":"2023-02-01T00:38:29.697Z","modified":"2026-10-28T02:31:07.144577558Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:30.709518Z"},{"id":"GHSA-xrh7-m5pp-39r6","title":"XSS Attack with Express API","description":"### Impact\nXSS attack - anyone using the Express API is impacted\n\n### Patches\nThe problem has been resolved. Users should upgrade to version 2.0.0.\n\n### Workarounds\nDon't pass user supplied data directly to `res.renderFile`. \n\n### References\n_Are there any links users can visit to find out more?_\nSee https://github.com/eta-dev/eta/releases/tag/v2.0.0","status":"published","published":"2023-01-31T22:39:40Z","modified":"2023-11-08T04:11:41.91809Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:47:00.198893Z"}]}}