{"id":"CVE-2021-4323","aliases":["DEBIAN-CVE-2021-4323","DSA-4906-1","EUVD-2021-34152","GHSA-rcgv-4q4h-jw95"],"status":"published","title":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72...","description":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00463,"percentile":0.40544,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2021-04-27T00:00:00Z","modified":"2026-10-23T18:04:38Z","fixes":[{"ecosystem":"Debian:12","package":"chromium","fixed_in":["90.0.4430.72-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"chromium","fixed_in":["90.0.4430.72-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"chromium","fixed_in":["90.0.4430.72-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"chromium","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"90.0.4430.72-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"chromium","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"90.0.4430.72-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"chromium","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"90.0.4430.72-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"chromium","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"90.0.4430.85-1~deb10u1"}]}],"versions":["73.0.3683.75-1","74.0.3729.108-1","75.0.3770.10-1","75.0.3770.80-1","75.0.3770.90-1","76.0.3809.100-1","76.0.3809.100-1~deb10u1","76.0.3809.62-1","76.0.3809.71-1","76.0.3809.87-1","76.0.3809.87-2","78.0.3904.108-1","78.0.3904.108-1~deb10u1","78.0.3904.87-1","78.0.3904.97-1","78.0.3904.97-1~deb10u1","79.0.3945.130-1","79.0.3945.130-1~deb10u1","79.0.3945.130-2","79.0.3945.56-1","79.0.3945.79-1","80.0.3987.106-1","80.0.3987.116-1","80.0.3987.122-1","80.0.3987.122-2","80.0.3987.132-1","80.0.3987.132-1~deb10u1","80.0.3987.149-1","80.0.3987.149-1~deb10u1","80.0.3987.162-1","80.0.3987.162-1~deb10u1","81.0.4044.62-1","81.0.4044.92-1","83.0.4103.106-1","83.0.4103.116-1","83.0.4103.116-1~deb10u1","83.0.4103.116-1~deb10u2","83.0.4103.116-1~deb10u3","83.0.4103.116-2","83.0.4103.116-3","83.0.4103.116-3.1","83.0.4103.83-1","84.0.4147.105-1","84.0.4147.89-1","87.0.4280.141-0.1","87.0.4280.141-0.1~deb10u1","87.0.4280.88-0.1","87.0.4280.88-0.2","87.0.4280.88-0.3","87.0.4280.88-0.4","87.0.4280.88-0.4~deb10u1","88.0.4324.146-1","88.0.4324.146-1~deb10u1","88.0.4324.150-1","88.0.4324.182-1","88.0.4324.182-1~deb10u1","88.0.4324.96-0.1","88.0.4324.96-1","88.0.4324.96-2","89.0.4389.114-1","89.0.4389.114-1~deb10u1","89.0.4389.82-1","89.0.4389.90-1","90.0.4430.72-1"],"bundled":25}],"products":[{"vendor":"google","product":"chrome"}],"references":[{"url":"https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html","tags":["x_transferred","Release Notes","Vendor Advisory","advisory"]},{"url":"https://crbug.com/1176031","tags":["x_transferred","Exploit","Issue Tracking","Vendor Advisory","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ/","tags":["x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4323"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ"},{"url":"https://github.com/advisories/GHSA-rcgv-4q4h-jw95"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-4323","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-4323","description":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)","status":"published","published":"2023-07-28T23:26:54.321Z","modified":"2025-02-13T16:28:42.024Z","updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2021-34152","description":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)","status":"published","published":"2023-07-28T23:26:54Z","modified":"2025-02-13T16:28:42Z","cvss":[{"version":"","score":0,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"none"}],"updated_at":"2026-11-03T00:03:52.752782Z"}],"ghsa":[{"id":"GHSA-rcgv-4q4h-jw95","title":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72...","description":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)","status":"published","published":"2023-07-29T00:30:47Z","modified":"2024-04-04T06:25:14Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T14:56:42.088122Z"}],"nvd":[{"id":"CVE-2021-4323","description":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)","status":"published","published":"2023-07-29T00:15:10.667Z","modified":"2026-06-17T04:19:30.353Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:07:07.764332Z"}],"osv":[{"id":"CVE-2021-4323","description":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)","status":"published","published":"2023-07-29T00:15:10.667Z","modified":"2026-03-14T11:15:52.999574Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:21.877444Z"},{"id":"DEBIAN-CVE-2021-4323","description":"Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)","status":"published","published":"2023-07-29T00:15:10.667Z","modified":"2026-10-23T18:04:38.973881067Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:35.799676Z"},{"id":"DSA-4906-1","title":"chromium - security update","status":"published","published":"2021-04-27T00:00:00Z","modified":"2026-03-09T02:10:17.124703Z","updated_at":"2026-11-02T15:46:17.19998Z"}]}}