CVE-2025-13204

CVSS 7.3 HIGHEPSS 0.4%CWE-1321

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.3EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

14 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

silentmatt · expr-eval

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References

https://github.com/jorenbroekema/expr-eval https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py https://github.com/silentmatt/expr-eval https://github.com/silentmatt/expr-eval/pull/252/files https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py https://www.huntr.dev/bounties/1-npm-expr-eval/https://www.npmjs.com/package/expr-eval-fork