{"id":"CVE-2024-45489","aliases":["EUVD-2024-41508","GHSA-84q8-hphj-4r7w"],"status":"published","title":"Arc before 2024-08-26 allows remote code execution in JavaScript boosts. Boosts that run...","description":"Arc before 2024-08-26 allows remote code execution in JavaScript boosts. Boosts that run JavaScript cannot be shared by default; however (because of misconfigured Firebase ACLs), it is possible to create or update a boost using another user's ID. This installs the boost in the victim's browser and runs arbitrary Javascript on that browser in a privileged context. NOTE: this is a no-action cloud vulnerability with zero affected users.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.01238,"percentile":0.69499,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2024-09-20T00:00:00Z","modified":"2026-06-17T07:54:18Z","products":[{"vendor":"the_browser_company","product":"arc"}],"references":[{"url":"https://kibty.town/blog/arc/"},{"url":"https://news.ycombinator.com/item?id=41597250"},{"url":"https://arc.net/blog/CVE-2024-45489-incident-response"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45489"},{"url":"https://kibty.town/blog/arc"},{"url":"https://github.com/advisories/GHSA-84q8-hphj-4r7w"}],"sources":{"cve":[{"id":"CVE-2024-45489","description":"Arc before 2024-08-26 allows remote code execution in JavaScript boosts. Boosts that run JavaScript cannot be shared by default; however (because of misconfigured Firebase ACLs), it is possible to create or update a boost using another user's ID. This installs the boost in the victim's browser and runs arbitrary Javascript on that browser in a privileged context. NOTE: this is a no-action cloud vulnerability with zero affected users.","status":"published","published":"2024-09-20T00:00:00Z","modified":"2024-09-20T18:44:54.069Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:34:08.16279Z"}],"euvd":[{"id":"EUVD-2024-41508","description":"Arc before 2024-08-26 allows remote code execution in JavaScript boosts. Boosts that run JavaScript cannot be shared by default; however (because of misconfigured Firebase ACLs), it is possible to create or update a boost using another user's ID. This installs the boost in the victim's browser and runs arbitrary Javascript on that browser in a privileged context. NOTE: this is a no-action cloud vulnerability with zero affected users.","status":"published","published":"2024-09-20T00:00:00Z","modified":"2024-09-20T18:44:54Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:28:17.441522Z"}],"ghsa":[{"id":"GHSA-84q8-hphj-4r7w","title":"Arc before 2024-08-26 allows remote code execution in JavaScript boosts. Boosts that run...","description":"Arc before 2024-08-26 allows remote code execution in JavaScript boosts. Boosts that run JavaScript cannot be shared by default; however, it is possible to create or update a boost using another user's ID. This installs the boost in the victim's browser and runs arbitrary Javascript on that browser in a privileged context.","status":"published","published":"2024-09-20T18:32:27Z","modified":"2024-09-20T21:32:46Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:58:19.257617Z"}],"nvd":[{"id":"CVE-2024-45489","description":"Arc before 2024-08-26 allows remote code execution in JavaScript boosts. Boosts that run JavaScript cannot be shared by default; however (because of misconfigured Firebase ACLs), it is possible to create or update a boost using another user's ID. This installs the boost in the victim's browser and runs arbitrary Javascript on that browser in a privileged context. NOTE: this is a no-action cloud vulnerability with zero affected users.","status":"published","published":"2024-09-20T17:15:15.06Z","modified":"2026-06-17T07:54:18.36Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:10:27.456509Z"}]}}