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CVE-2023-26139

HIGH
7.5
CVSS Score
Published: August 1, 2023 at 05:00 AM UTC
Updated: June 17, 2026 at 05:42 AM UTC
1 product affected across 1 vendorUnderscore Keypath

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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

Versions of the package underscore-keypath from 0.0.11 are vulnerable to Prototype Pollution via the name argument of the setProperty() function. Exploiting this vulnerability is possible due to improper input sanitization which allows the usage of arguments like “__proto__”.

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, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory
Source: [email protected]
https://gist.github.com/lelecolacola123/cc0d1e73780127aea9482c05f2ff3252
Third Party Advisory
Source: [email protected]
https://security.snyk.io/vuln/SNYK-JS-UNDERSCOREKEYPATH-5416714

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGHsnyk
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-1321

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