CVE-2021-23406

Remote Code Execution (RCE)

CRITICAL
9.8
CVSS Score
Published: August 24, 2021 at 07:45 AM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorPac Resolver

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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%

Description

This affects the package pac-resolver before 5.0.0. This can occur when used with untrusted input, due to unsafe PAC file handling. **NOTE:** The fix for this vulnerability is applied in the node-degenerator library, a dependency written by the same maintainer.

Affected

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

v < 5.0.0
Affected range stops below 5.0.0, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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