CVE-2025-13204 | BDVDB-2026-302104 Detail
silentmattexpr-eval
Description#
npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
References#
- https://www.npmjs.com/package/expr-eval-fork
- https://github.com/silentmatt/expr-eval
- https://github.com/jorenbroekema/expr-eval
- https://www.huntr.dev/bounties/1-npm-expr-eval/
- https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py
- https://github.com/silentmatt/expr-eval/pull/252/files
- https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py
Exploit#
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.