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CVE-2025-55346

CRITICALCVSS 9.8/10EPSS 17.42%

Last modified

CVE-2025-55346 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 17.42% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
17.42%

96.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is 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.
How severe is CVE-2025-55346?
CVE-2025-55346 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 17.42% probability of exploitation in the next 30 days.
How do I fix CVE-2025-55346?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-55346?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST