CVE-2025-47154

critical · 9

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."

CVSS

0.7%

EPSS (exploit prob.)

50th

EPSS percentile

2025-05-01

Published

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Weaknesses

CWE-820

References

https://github.com/LadybirdBrowser/ladybird/commit/f5a670421954fc7130c3685b713c621b29516669
https://jessie.cafe/posts/pwning-ladybirds-libjs/
https://news.ycombinator.com/item?id=43852096
https://jessie.cafe/posts/pwning-ladybirds-libjs/

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-47154