TanStack Unspecified Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

CRITICAL

9.6 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

17.05 %

Predictive Probability

Percentile Rank

95.1 th

Documented as more likely to be exploited than 95.1% of known CVEs.

Detection Date

May 27, 2026

Remediation Due

Jun 10, 2026

CISA Catalog Active

Threat Analysis

TanStack contains an unspecified vulnerability that allowed malicious versions of the product to be published to the npm registry to publish credential-stealing malware under a trusted identity.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see:

https://github.com/TanStack/router/security/advisories/GHSA-g7cv-rxg3-hmpx

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2026-45321