dot-access through 1.0.0 contains a prototype pollution vulnerability that allows attackers to modify Object.prototype by supplying a crafted dotted path to set(). Attackers controlling the path, such as through user-supplied field names, can use __proto__ segments to inject properties into all objects, altering authorization flags and option defaults or crashing the process.
https://github.com/ntharim/dot-access/issues/5
https://github.com/ntharim/dot-access/blob/v1.0.0/index.js#L9-L18
https://github.com/ntharim/dot-access
https://gist.github.com/R3tro16/e094e4318a040f189fd5d2d33e8c3ec2
Published: 2026-10-08
Updated: 2026-10-08
Base Score: 8.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:P
Severity: High
Base Score: 8.2
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Severity: High
Base Score: 8.8
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00325