{"id":"CVE-2025-47154","aliases":["EUVD-2025-14653","GHSA-g8g2-3hvq-w5f4"],"status":"disputed","title":"LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list...","description":"LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says \"Ladybird is in a pre-alpha state, and only suitable for use by developers.\"","severity":{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00692,"percentile":0.53171,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-820"],"published":"2025-05-01T00:00:00Z","modified":"2026-10-28T11:02:11Z","products":[{"vendor":"ladybird","product":"ladybird"}],"references":[{"url":"https://news.ycombinator.com/item?id=43852096","tags":["web"]},{"url":"https://jessie.cafe/posts/pwning-ladybirds-libjs/","tags":["exploit","web"]},{"url":"https://github.com/LadybirdBrowser/ladybird/commit/f5a670421954fc7130c3685b713c621b29516669","tags":["fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47154","tags":["advisory"]},{"url":"https://jessie.cafe/posts/pwning-ladybirds-libjs"},{"url":"https://github.com/advisories/GHSA-g8g2-3hvq-w5f4"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47154.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-47154","description":"LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says \"Ladybird is in a pre-alpha state, and only suitable for use by developers.\"","status":"disputed","published":"2025-05-01T00:00:00Z","modified":"2025-05-01T15:33:42.106Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-820"],"updated_at":"2026-11-02T14:32:26.320248Z"}],"euvd":[{"id":"EUVD-2025-14653","description":"LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says \"Ladybird is in a pre-alpha state, and only suitable for use by developers.\"","status":"published","published":"2025-05-01T00:00:00Z","modified":"2025-05-01T15:33:42Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T20:51:56.915258Z"}],"ghsa":[{"id":"GHSA-g8g2-3hvq-w5f4","title":"LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list...","description":"LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says \"Ladybird is in a pre-alpha state, and only suitable for use by developers.\"","status":"published","published":"2025-05-01T09:32:27Z","modified":"2025-05-01T09:32:34Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-820"],"updated_at":"2026-11-02T15:02:05.229867Z"}],"nvd":[{"id":"CVE-2025-47154","description":"LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says \"Ladybird is in a pre-alpha state, and only suitable for use by developers.\"","status":"disputed","published":"2025-05-01T08:15:17.95Z","modified":"2026-06-17T09:27:31.2Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-820"],"updated_at":"2026-11-02T14:11:02.570368Z"}],"osv":[{"id":"CVE-2025-47154","description":"LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says \"Ladybird is in a pre-alpha state, and only suitable for use by developers.\"","status":"published","published":"2025-05-01T00:00:00Z","modified":"2026-10-28T11:02:11.674957447Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-820"],"updated_at":"2026-11-02T15:44:49.707645Z"}]}}