FKIE_CVE-2026-45321

Vulnerability from fkie_nvd - Published: 2026-05-12 01:16 - Updated: 2026-05-27 19:16
Severity
9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Summary
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.
References
security-advisories@github.comhttps://github.com/TanStack/router/issues/7383Issue Tracking
security-advisories@github.comhttps://github.com/TanStack/router/security/advisories/GHSA-g7cv-rxg3-hmpxMitigation, Vendor Advisory
security-advisories@github.comhttps://tanstack.com/blog/npm-supply-chain-compromise-postmortemExploit, Vendor Advisory
security-advisories@github.comhttps://www.stepsecurity.io/blog/mini-shai-hulud-is-back-a-self-spreading-supply-chain-attack-hits-the-npm-ecosystemExploit, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45321
Impacted products
Vendor Product Version
tanstack tanstack\/arktype-adapter 1.166.12
tanstack tanstack\/arktype-adapter 1.166.15
tanstack tanstack\/eslint-plugin-router 1.161.9
tanstack tanstack\/eslint-plugin-router 1.161.12
tanstack tanstack\/eslint-plugin-start 0.0.4
tanstack tanstack\/eslint-plugin-start 0.0.7
tanstack tanstack\/history 1.161.9
tanstack tanstack\/history 1.161.12
tanstack tanstack\/nitro-v2-vite-plugin 1.154.12
tanstack tanstack\/nitro-v2-vite-plugin 1.154.15
tanstack tanstack\/react-router 1.169.5
tanstack tanstack\/react-router 1.169.8
tanstack tanstack\/react-router-devtools 1.166.16
tanstack tanstack\/react-router-devtools 1.166.19
tanstack tanstack\/react-router-ssr-query 1.166.15
tanstack tanstack\/react-router-ssr-query 1.166.18
tanstack tanstack\/react-start 1.167.68
tanstack tanstack\/react-start 1.167.71
tanstack tanstack\/react-start-client 1.166.51
tanstack tanstack\/react-start-client 1.166.54
tanstack tanstack\/react-start-rsc 0.0.47
tanstack tanstack\/react-start-rsc 0.0.50
tanstack tanstack\/react-start-server 1.166.55
tanstack tanstack\/react-start-server 1.166.58
tanstack tanstack\/router-cli 1.166.46
tanstack tanstack\/router-cli 1.166.49
tanstack tanstack\/router-core 1.169.5
tanstack tanstack\/router-core 1.169.8
tanstack tanstack\/router-devtools 1.166.16
tanstack tanstack\/router-devtools 1.166.19
tanstack tanstack\/router-devtools-core 1.167.6
tanstack tanstack\/router-devtools-core 1.167.9
tanstack tanstack\/router-generator 1.166.45
tanstack tanstack\/router-generator 1.166.48
tanstack tanstack\/router-plugin 1.167.38
tanstack tanstack\/router-plugin 1.167.41
tanstack tanstack\/router-ssr-query-core 1.168.3
tanstack tanstack\/router-ssr-query-core 1.168.6
tanstack tanstack\/router-utils 1.161.11
tanstack tanstack\/router-utils 1.161.14
tanstack tanstack\/router-vite-plugin 1.166.53
tanstack tanstack\/router-vite-plugin 1.166.56
tanstack tanstack\/solid-router 1.169.5
tanstack tanstack\/solid-router 1.169.8
tanstack tanstack\/solid-router-devtools 1.166.16
tanstack tanstack\/solid-router-devtools 1.166.19
tanstack tanstack\/solid-router-ssr-query 1.166.15
tanstack tanstack\/solid-router-ssr-query 1.166.18
tanstack tanstack\/solid-start 1.167.65
tanstack tanstack\/solid-start 1.167.68
tanstack tanstack\/solid-start-client 1.166.50
tanstack tanstack\/solid-start-client 1.166.53
tanstack tanstack\/solid-start-server 1.166.54
tanstack tanstack\/solid-start-server 1.166.57
tanstack tanstack\/start-client-core 1.168.5
tanstack tanstack\/start-client-core 1.168.8
tanstack tanstack\/start-fn-stubs 1.161.9
tanstack tanstack\/start-fn-stubs 1.161.12
tanstack tanstack\/start-plugin-core 1.169.23
tanstack tanstack\/start-plugin-core 1.169.26
tanstack tanstack\/start-server-core 1.167.33
tanstack tanstack\/start-server-core 1.167.36
tanstack tanstack\/start-static-server-functions 1.166.44
tanstack tanstack\/start-static-server-functions 1.166.47
tanstack tanstack\/start-storage-context 1.166.38
tanstack tanstack\/start-storage-context 1.166.41
tanstack tanstack\/valibot-adapter 1.166.12
tanstack tanstack\/valibot-adapter 1.166.15
tanstack tanstack\/virtual-file-routes 1.161.10
tanstack tanstack\/virtual-file-routes 1.161.13
tanstack tanstack\/vue-router 1.169.5
tanstack tanstack\/vue-router 1.169.8
tanstack tanstack\/vue-router-devtools 1.166.16
tanstack tanstack\/vue-router-devtools 1.166.19
tanstack tanstack\/vue-router-ssr-query 1.166.15
tanstack tanstack\/vue-router-ssr-query 1.166.18
tanstack tanstack\/vue-start 1.167.61
tanstack tanstack\/vue-start 1.167.64
tanstack tanstack\/vue-start-client 1.166.46
tanstack tanstack\/vue-start-client 1.166.49
tanstack tanstack\/vue-start-server 1.166.50
tanstack tanstack\/vue-start-server 1.166.53
tanstack tanstack\/zod-adapter 1.166.12
tanstack tanstack\/zod-adapter 1.166.15
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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 \u2014 a pull_request_target \"Pwn Request\" misconfiguration, GitHub Actions cache poisoning across the fork\u2194base trust boundary, and runtime memory extraction of the OIDC token from the Actions runner process \u2014 to publish credential-stealing malware under a trusted identity. Each affected package received exactly two malicious versions, published a few minutes apart."
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  "id": "CVE-2026-45321",
  "lastModified": "2026-05-27T19:16:22.853",
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
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  "published": "2026-05-12T01:16:46.820",
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      "source": "security-advisories@github.com",
      "tags": [
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      "url": "https://github.com/TanStack/router/issues/7383"
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          "value": "CWE-506"
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      ],
      "source": "security-advisories@github.com",
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}


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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.