CVE-2025-55346

CVE-2025-55346

User-controlled input flows to an unsafe implementation of a dynamic Function constructor, allowing network attackers to run arbitrary unsandboxed JS code in the context of the host, by sending a simple POST request.

Vulnerability class: RCE (Remote Code Execution)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.220 (97.6th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-55346: rose from 0.184 to 0.220.

EPSS over last 30 days · oldest: 0.184 · newest: 0.220 · change: +0.035

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-55346?
CVE-2025-55346 is a critical-severity vulnerability, classified under Code Injection. CVSS score: 9.8/10. Published 2025-08-14.
How severe is CVE-2025-55346?
Critical severity. CVSS v3 base score is 9.8 out of 10.