CVE-2026-45321
CriticalActively exploited (CISA KEV)Known to be used in ransomware campaigns
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.
SeverityCritical
CVSS9.6
Exploit probability—
Product
TanStack
PublishedMay 12, 2026
First seenMay 12, 2026
Added to KEVMay 27, 2026
Weakness typeCWE-506CWE-506
How to fix
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: Jun 10, 2026Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tanstack tanstack\/arktype-adapter | 1.166.12, 1.166.15 | — |
| tanstack tanstack\/eslint-plugin-router | 1.161.9, 1.161.12 | — |
| tanstack tanstack\/eslint-plugin-start | 0.0.4, 0.0.7 | — |
| tanstack tanstack\/history | 1.161.9, 1.161.12 | — |
| tanstack tanstack\/nitro-v2-vite-plugin | 1.154.12, 1.154.15 | — |
| tanstack tanstack\/react-router | 1.169.5, 1.169.8 | — |
| tanstack tanstack\/react-router-devtools | 1.166.16, 1.166.19 | — |
| tanstack tanstack\/react-router-ssr-query | 1.166.15, 1.166.18 | — |
| tanstack tanstack\/react-start | 1.167.68, 1.167.71 | — |
| tanstack tanstack\/react-start-client | 1.166.51, 1.166.54 | — |
| tanstack tanstack\/react-start-rsc | 0.0.47, 0.0.50 | — |
| tanstack tanstack\/react-start-server | 1.166.55, 1.166.58 | — |
| tanstack tanstack\/router-cli | 1.166.46, 1.166.49 | — |
| tanstack tanstack\/router-core | 1.169.5, 1.169.8 | — |
| tanstack tanstack\/router-devtools | 1.166.16, 1.166.19 | — |
| tanstack tanstack\/router-devtools-core | 1.167.6, 1.167.9 | — |
| tanstack tanstack\/router-generator | 1.166.45, 1.166.48 | — |
| tanstack tanstack\/router-plugin | 1.167.38, 1.167.41 | — |
| tanstack tanstack\/router-ssr-query-core | 1.168.3, 1.168.6 | — |
| tanstack tanstack\/router-utils | 1.161.11, 1.161.14 | — |
| tanstack tanstack\/router-vite-plugin | 1.166.53, 1.166.56 | — |
| tanstack tanstack\/solid-router | 1.169.5, 1.169.8 | — |
| tanstack tanstack\/solid-router-devtools | 1.166.16, 1.166.19 | — |
| tanstack tanstack\/solid-router-ssr-query | 1.166.15, 1.166.18 | — |
| tanstack tanstack\/solid-start | 1.167.65, 1.167.68 | — |
| tanstack tanstack\/solid-start-client | 1.166.50, 1.166.53 | — |
| tanstack tanstack\/solid-start-server | 1.166.54, 1.166.57 | — |
| tanstack tanstack\/start-client-core | 1.168.5, 1.168.8 | — |
| tanstack tanstack\/start-fn-stubs | 1.161.9, 1.161.12 | — |
| tanstack tanstack\/start-plugin-core | 1.169.23, 1.169.26 | — |
| tanstack tanstack\/start-server-core | 1.167.33, 1.167.36 | — |
| tanstack tanstack\/start-static-server-functions | 1.166.44, 1.166.47 | — |
| tanstack tanstack\/start-storage-context | 1.166.38, 1.166.41 | — |
| tanstack tanstack\/valibot-adapter | 1.166.12, 1.166.15 | — |
| tanstack tanstack\/virtual-file-routes | 1.161.10, 1.161.13 | — |
| tanstack tanstack\/vue-router | 1.169.5, 1.169.8 | — |
| tanstack tanstack\/vue-router-devtools | 1.166.16, 1.166.19 | — |
| tanstack tanstack\/vue-router-ssr-query | 1.166.15, 1.166.18 | — |
| tanstack tanstack\/vue-start | 1.167.61, 1.167.64 | — |
| tanstack tanstack\/vue-start-client | 1.166.46, 1.166.49 | — |
| tanstack tanstack\/vue-start-server | 1.166.50, 1.166.53 | — |
| tanstack tanstack\/zod-adapter | 1.166.12, 1.166.15 | — |
| mistral mistralai | 2.4.6 | — |
| mistral mistralai\/mistralai | 2.2.3, 2.2.4 | — |
| mistral mistralai\/mistralai-azure | 1.7.2, 1.7.3 | — |
| mistral mistralai\/mistralai-gcp | 1.7.2, 1.7.3 | — |
| antoinebcx ml-toolkit-ts | 1.0.4, 1.0.5 | — |
| antoinebcx ml-toolkit-ts\/preprocessing | 1.0.2, 1.0.3 | — |
| antoinebcx ml-toolkit-ts\/xgboost | 1.0.3, 1.0.4 | — |
| beproduct beproduct\/nestjs-auth | 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.1.10, 0.1.11, 0.1.12, 0.1.13, 0.1.14, 0.1.15, 0.1.16, 0.1.17, 0.1.19 | — |
| christianalares git-git-git | 1.0.8, 1.0.9, 1.0.10, 1.0.12 | — |
| christianalares git_branch_selector | 1.3.3, 1.3.4, 1.3.5, 1.3.7 | — |
| christianalares nextmove-mcp | 0.1.3, 0.1.4, 0.1.5, 0.1.7 | — |
| christianalares tolka\/cli | 1.0.2, 1.0.3, 1.0.4, 1.0.6 | — |
| multiagentcognition cmux-agent-mcp | 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8 | — |
| abhishake1 supersurkhet\/cli | 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.0.6, 0.0.7 | — |
| abhishake1 supersurkhet\/sdk | 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.0.6, 0.0.7 | — |
| abhishake1 taskflow-corp\/cli | 0.1.24, 0.1.25, 0.1.26, 0.1.27, 0.1.28, 0.1.29 | — |
| kilbot tallyui\/components | 1.0.1, 1.0.2, 1.0.3 | — |
| kilbot tallyui\/connector-medusa | 1.0.1, 1.0.2, 1.0.3 | — |
| kilbot tallyui\/connector-shopify | 1.0.1, 1.0.2, 1.0.3 | — |
| kilbot tallyui\/connector-vendure | 1.0.1, 1.0.2, 1.0.3 | — |
| kilbot tallyui\/connector-woocommerce | 1.0.1, 1.0.2, 1.0.3 | — |
| kilbot tallyui\/core | 0.2.1, 0.2.2, 0.2.3 | — |
| kilbot tallyui\/database | 1.0.1, 1.0.2, 1.0.3 | — |
| kilbot tallyui\/pos | 0.1.1, 0.1.2, 0.1.3 | — |
| kilbot tallyui\/storage-sqlite | 0.2.1, 0.2.2, 0.2.3 | — |
| kilbot tallyui\/theme | 0.2.1, 0.2.2, 0.2.3 | — |
| matheuspergoli draftauth\/client | 0.2.1, 0.2.2 | — |
| matheuspergoli draftauth\/core | 0.13.1, 0.13.2 | — |
| matheuspergoli draftlab\/auth | 0.24.1, 0.24.2 | — |
| matheuspergoli draftlab\/auth-router | 0.5.1, 0.5.2 | — |
| matheuspergoli draftlab\/db | 0.16.1, 0.16.2 | — |
| matheuspergoli simple_type-safe_actions | 0.8.3, 0.8.4 | — |
| neilcochran cross-stitch | 1.1.3, 1.1.4, 1.1.6 | — |
| neilcochran squawk\/airports | 0.6.2 | — |
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