CVE-2026-45321 (GCVE-0-2026-45321)

Vulnerability from cvelistv5 – Published: 2026-05-12 00:12 – Updated: 2026-05-12 15:16
VLAI?
Title
Malware in 42 @tanstack/* packages exfiltrates cloud credentials, GitHub tokens, and SSH keys
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.
Severity ?
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE
  • CWE-506 - Embedded Malicious Code
Assigner
References
Impacted products
Vendor Product Version
@tanstack arktype-adapter Affected: 1.166.12
Affected: 1.166.15
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@tanstack eslint-plugin-router Affected: 1.161.9
Affected: 1.161.12
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@tanstack eslint-plugin-start Affected: 0.0.4
Affected: 0.0.7
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@tanstack history Affected: 1.161.9
Affected: 1.161.12
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@tanstack nitro-v2-vite-plugin Affected: 1.154.12
Affected: 1.154.15
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@tanstack react-router Affected: 1.169.5
Affected: 1.169.8
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@tanstack react-router-devtools Affected: 1.166.16
Affected: 1.166.19
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@tanstack react-router-ssr-query Affected: 1.166.15
Affected: 1.166.18
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@tanstack react-start Affected: 1.167.68
Affected: 1.167.71
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@tanstack react-start-client Affected: 1.166.51
Affected: 1.166.54
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@tanstack react-start-rsc Affected: 0.0.47
Affected: 0.0.50
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@tanstack react-start-server Affected: 1.166.55
Affected: 1.166.58
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@tanstack router-cli Affected: 1.166.46
Affected: 1.166.49
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@tanstack router-core Affected: 1.169.5
Affected: 1.169.8
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@tanstack router-devtools Affected: 1.166.16
Affected: 1.166.19
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@tanstack router-devtools-core Affected: 1.167.6
Affected: 1.167.9
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@tanstack router-generator Affected: 1.166.45
Affected: 1.166.48
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@tanstack router-plugin Affected: 1.167.38
Affected: 1.167.41
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@tanstack router-ssr-query-core Affected: 1.168.3
Affected: 1.168.6
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@tanstack router-utils Affected: 1.161.11
Affected: 1.161.14
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@tanstack outer-vite-plugin Affected: 1.166.53
Affected: 1.166.56
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@tanstack solid-router Affected: 1.169.5
Affected: 1.169.8
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@tanstack solid-router-devtools Affected: 1.166.16
Affected: 1.166.19
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@tanstack solid-router-ssr-query Affected: 1.166.15
Affected: 1.166.18
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@tanstack solid-start Affected: 1.167.65
Affected: 1.167.68
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@tanstack solid-start-client Affected: 1.166.50
Affected: 1.166.53
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@tanstack solid-start-server Affected: 1.166.54
Affected: 1.166.57
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@tanstack start-client-core Affected: 1.168.5
Affected: 1.168.8
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@tanstack start-fn-stubs Affected: 1.161.9
Affected: 1.161.12
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@tanstack start-plugin-core Affected: 1.169.23
Affected: 1.169.26
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@tanstack start-server-core Affected: 1.167.33
Affected: 1.167.36
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@tanstack start-static-server-functions Affected: 1.166.44
Affected: 1.166.47
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@tanstack start-storage-context Affected: 1.166.38
Affected: 1.166.41
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@tanstack valibot-adapter Affected: 1.166.12
Affected: 1.166.15
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@tanstack virtual-file-routes Affected: 1.161.10
Affected: 1.161.13
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@tanstack vue-router Affected: 1.169.5
Affected: 1.169.8
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@tanstack vue-router-devtools Affected: 1.166.16
Affected: 1.166.19
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@tanstack vue-router-ssr-query Affected: 1.166.15
Affected: 1.166.18
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@tanstack vue-start Affected: 1.167.61
Affected: 1.167.64
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@tanstack vue-start-client Affected: 1.166.46
Affected: 1.166.49
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@tanstack vue-start-server Affected: 1.166.50
Affected: 1.166.53
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@tanstack zod-adapter Affected: 1.166.12
Affected: 1.166.15
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              "status": "affected",
              "version": "1.166.12"
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              "version": "1.166.15"
            }
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        }
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-45321\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-05-12T01:16:46.820\",\"lastModified\":\"2026-05-12T16:16:24.430\",\"vulnStatus\":\"Received\",\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H\",\"baseScore\":9.6,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-506\"}]}],\"references\":[{\"url\":\"https://github.com/TanStack/router/issues/7383\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/TanStack/router/security/advisories/GHSA-g7cv-rxg3-hmpx\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://tanstack.com/blog/npm-supply-chain-compromise-postmortem\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://www.stepsecurity.io/blog/mini-shai-hulud-is-back-a-self-spreading-supply-chain-attack-hits-the-npm-ecosystem\",\"source\":\"security-advisories@github.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-45321\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-12T13:21:24.916980Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-12T13:21:29.648Z\"}}], \"cna\": {\"title\": \"Malware in 42 @tanstack/* packages exfiltrates cloud credentials, GitHub tokens, and SSH keys\", \"source\": {\"advisory\": \"GHSA-g7cv-rxg3-hmpx\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 9.6, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", 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\"nitro-v2-vite-plugin\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.154.12\"}, {\"status\": \"affected\", \"version\": \"1.154.15\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"react-router\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.169.5\"}, {\"status\": \"affected\", \"version\": \"1.169.8\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"react-router-devtools\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.16\"}, {\"status\": \"affected\", \"version\": \"1.166.19\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"react-router-ssr-query\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.15\"}, {\"status\": \"affected\", \"version\": \"1.166.18\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"react-start\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.167.68\"}, {\"status\": \"affected\", \"version\": \"1.167.71\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"react-start-client\", \"versions\": 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{\"status\": \"affected\", \"version\": \"1.166.19\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"router-devtools-core\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.167.6\"}, {\"status\": \"affected\", \"version\": \"1.167.9\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"router-generator\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.45\"}, {\"status\": \"affected\", \"version\": \"1.166.48\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"router-plugin\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.167.38\"}, {\"status\": \"affected\", \"version\": \"1.167.41\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"router-ssr-query-core\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.168.3\"}, {\"status\": \"affected\", \"version\": \"1.168.6\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"router-utils\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.161.11\"}, {\"status\": \"affected\", \"version\": \"1.161.14\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"outer-vite-plugin\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.53\"}, {\"status\": \"affected\", \"version\": \"1.166.56\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"solid-router\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.169.5\"}, {\"status\": \"affected\", \"version\": \"1.169.8\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"solid-router-devtools\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.16\"}, {\"status\": \"affected\", \"version\": \"1.166.19\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"solid-router-ssr-query\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.15\"}, {\"status\": \"affected\", \"version\": \"1.166.18\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"solid-start\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.167.65\"}, {\"status\": \"affected\", \"version\": \"1.167.68\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"solid-start-client\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.50\"}, {\"status\": \"affected\", \"version\": \"1.166.53\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"solid-start-server\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.54\"}, {\"status\": \"affected\", \"version\": \"1.166.57\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"start-client-core\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.168.5\"}, {\"status\": \"affected\", \"version\": \"1.168.8\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"start-fn-stubs\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.161.9\"}, {\"status\": \"affected\", \"version\": \"1.161.12\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"start-plugin-core\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.169.23\"}, {\"status\": \"affected\", \"version\": \"1.169.26\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"start-server-core\", \"versions\": 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\"affected\", \"version\": \"1.166.53\"}]}, {\"vendor\": \"@tanstack\", \"product\": \"zod-adapter\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.166.12\"}, {\"status\": \"affected\", \"version\": \"1.166.15\"}]}], \"references\": [{\"url\": \"https://github.com/TanStack/router/security/advisories/GHSA-g7cv-rxg3-hmpx\", \"name\": \"https://github.com/TanStack/router/security/advisories/GHSA-g7cv-rxg3-hmpx\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/TanStack/router/issues/7383\", \"name\": \"https://github.com/TanStack/router/issues/7383\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://tanstack.com/blog/npm-supply-chain-compromise-postmortem\", \"name\": \"https://tanstack.com/blog/npm-supply-chain-compromise-postmortem\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://www.stepsecurity.io/blog/mini-shai-hulud-is-back-a-self-spreading-supply-chain-attack-hits-the-npm-ecosystem\", \"name\": \"https://www.stepsecurity.io/blog/mini-shai-hulud-is-back-a-self-spreading-supply-chain-attack-hits-the-npm-ecosystem\", \"tags\": [\"x_refsource_MISC\"]}], \"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. 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      "cveMetadata": "{\"cveId\": \"CVE-2026-45321\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T15:16:17.354Z\", \"dateReserved\": \"2026-05-11T20:50:30.539Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-05-12T00:12:35.452Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
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.