Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-45321

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
12/05/2026
Last modified:
14/05/2026

Description

On 2026-05-11, between approximately 19:20 and 19:26 UTC, 84 malicious versions across 42 @tanstack/* packages were published to the npm registry. The publishes were authenticated via the legitimate GitHub Actions OIDC trusted-publisher binding for TanStack/router, but the publish workflow itself was not modified. The attacker chained three known vulnerability classes — a pull_request_target "Pwn Request" misconfiguration, GitHub Actions cache poisoning across the fork↔base trust boundary, and runtime memory extraction of the OIDC token from the Actions runner process — to publish credential-stealing malware under a trusted identity. Each affected package received exactly two malicious versions, published a few minutes apart.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.60 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.60
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:tanstack:tanstack\/arktype-adapter:1.166.12:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/arktype-adapter:1.166.15:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/eslint-plugin-router:1.161.9:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/eslint-plugin-router:1.161.12:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/eslint-plugin-start:0.0.4:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/eslint-plugin-start:0.0.7:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/history:1.161.9:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/history:1.161.12:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/nitro-v2-vite-plugin:1.154.12:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/nitro-v2-vite-plugin:1.154.15:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/react-router:1.169.5:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/react-router:1.169.8:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/react-router-devtools:1.166.16:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/react-router-devtools:1.166.19:*:*:*:*:node.js:*:*
cpe:2.3:a:tanstack:tanstack\/react-router-ssr-query:1.166.15:*:*:*:*:node.js:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools