GitHub Advisoryadvisory · npm

GHSA-8qm3-746x-r74r devalue `uneval`ed code can create objects with polluted prototypes when `eval`ed

LOW Published 2026-02-19 Modified 2026-02-19 Official page ↗
Ecosystem
npm
Packages
devalue
Severity
Low
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Weaknesses
CWE-1321
Reviewed
2026-02-19

Affected packages

• npm devalue: < 5.6.3 → fixed in 5.6.3

Description

Under certain circumstances, `uneval`ing untrusted data can produce output code that will create objects with polluted prototypes when later `eval`ed, meaning the output data can be a different shape from the input data.

Related

Weakness · CWE (1)

  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes weakness

References