Vulnary
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Critical· 9.8

CVE-2025-61140

A critical security flaw in the jsonpath library version 1.1.1 allows attackers to manipulate the library’s internal prototype chain. This can lead to arbitrary code execution or data tampering when the library processes untrusted input. The vulnerability is known as Prototype Pollution.

publishedJan 28, 2026
last modifiedJul 29, 2026
sourcesNVD
severity · cvss
9.8
critical · how bad it is
exploitation · epss
<1%
33th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Sep 11, 2026

No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.

01

Who is affected

The dchester jsonpath library, version 1.1.1, used in JavaScript projects that rely on JSON path queries.

02

Real-world impact

An attacker could inject malicious data into the library’s prototype, enabling them to alter program behavior, access sensitive information, or execute arbitrary code on the affected system.

03

Why this severity

The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network with no authentication or user interaction required, and it can compromise confidentiality, integrity, and availability of the affected application.

04

What to do about it

no official fix yet

No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.

No fix documented in sources

05

Timeline

  1. Jan 28, 2026 · Jan 28, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 29, 2026 · 17h ago
    Advisory updated
    The NVD record was last revised.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →