CVE-2025-13204

CVE-2025-13204

HIGH
7.3
CVSS Score
Published: November 14, 2025 at 05:02 PM UTC
Updated: October 7, 2026 at 09:10 PM UTC
2 products affected across 1 vendorJavaScript Expression EvaluatorExpr Eval

Using expr-eval by silentmatt?

Get instant alerts when new vulnerabilities affect expr-eval - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.3
Exploit prediction
EPSS 0.5%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-1321

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card