{"id":"CVE-2020-7642","aliases":["EUVD-2021-2530","GHSA-hg2p-2cvq-4ppv","SNYK-JS-LAZYSIZES-567144"],"status":"published","title":"Cross-site scripting in lazysizes","description":"lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: data-vimeo, data-vimeoparams, data-youtube and data-ytparams which can be abused to inject malicious JavaScript.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00889,"percentile":0.59584,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2020-04-22T15:13:51Z","modified":"2026-10-20T10:53:30Z","fixes":[{"ecosystem":"npm","package":"lazysizes","fixed_in":["5.2.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"lazysizes","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.2.0"},{"fixed":"5.2.1"}]}]},{"source":"osv","ecosystem":"npm","package":"lazysizes","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.2.1"}]}]}],"products":[{"vendor":"lazysizes_project","product":"lazysizes"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-LAZYSIZES-567144","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://github.com/aFarkas/lazysizes/commit/3720ab8262552d4e063a38d8492f9490a231fd48","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7642","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hg2p-2cvq-4ppv"}],"sources":{"cve":[{"id":"CVE-2020-7642","description":"lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: data-vimeo, data-vimeoparams, data-youtube and data-ytparams which can be abused to inject malicious JavaScript.","status":"published","published":"2020-04-22T15:13:51Z","modified":"2024-08-04T09:33:19.989Z","updated_at":"2026-11-02T14:35:58.331892Z"}],"euvd":[{"id":"EUVD-2021-2530","description":"lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: data-vimeo, data-vimeoparams, data-youtube and data-ytparams which can be abused to inject malicious JavaScript.","status":"published","published":"2020-04-22T15:13:51Z","modified":"2024-08-04T09:33:19Z","updated_at":"2026-11-03T03:07:59.058668Z"}],"ghsa":[{"id":"GHSA-hg2p-2cvq-4ppv","title":"Cross-site scripting in lazysizes","description":"lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: `data-vimeo`, `data-vimeoparams`, `data-youtube` and `data-ytparams` which can be abused to inject malicious JavaScript.","status":"published","published":"2021-12-10T20:06:23Z","modified":"2023-09-05T22:42:31Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:02.095916Z"}],"nvd":[{"id":"CVE-2020-7642","description":"lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: data-vimeo, data-vimeoparams, data-youtube and data-ytparams which can be abused to inject malicious JavaScript.","status":"published","published":"2020-04-22T16:15:13.077Z","modified":"2026-06-17T03:25:10.107Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:05:59.718774Z"}],"osv":[{"id":"CVE-2020-7642","description":"lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: data-vimeo, data-vimeoparams, data-youtube and data-ytparams which can be abused to inject malicious JavaScript.","status":"published","published":"2020-04-22T16:15:13.077Z","modified":"2026-10-20T10:53:30.670215831Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:17.34531Z"},{"id":"GHSA-hg2p-2cvq-4ppv","title":"Cross-site scripting in lazysizes","description":"lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: `data-vimeo`, `data-vimeoparams`, `data-youtube` and `data-ytparams` which can be abused to inject malicious JavaScript.","status":"published","published":"2021-12-10T20:06:23Z","modified":"2026-07-08T06:49:35.784231806Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:48.920784Z"}]}}