by Kastro
Paper/Archive/CVE-2025-13204

CVE-2025-13204

silentmatt expr-eval — CVE-2025-13204

EPSS 0.5%public exploitCVSS 9.8
critical.is priorityof 100
48
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 41.7.417 × 208.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
expr-eval≤ 2.0.2–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

refnpmjs.com/package/expr-eval-forkrefgithub.com/silentmatt/expr-evalrefgithub.com/jorenbroekema/expr-evalwriteuphuntr.dev/bounties/1-npm-expr-evalrefgithub.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.pypatchgithub.com/silentmatt/expr-eval/pull/252/filesexploitgithub.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py