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CVE-2026-45321

TanStack Unspecified

9.6 CRITICALActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 1.05%
  1. Published11 May 2026
  2. Added to CISA KEV27 May 2026
  3. Remediation due10 Jun 2026
Actively exploited (CISA KEV)

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.

Added to KEV: 27 May 2026Federal remediation due: 10 Jun 2026Used in ransomware

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Abhishake1 Supersurkhet/cli0.0.2 · 0.0.3 · 0.0.4 · 0.0.5
Abhishake1 Supersurkhet/sdk0.0.2 · 0.0.3 · 0.0.4 · 0.0.5
Abhishake1 Taskflow-corp/cli0.1.24 · 0.1.25 · 0.1.26 · 0.1.27
Agentworkhq Agentwork-cli0.1.4 · 0.1.5
Antoinebcx Ml-toolkit-ts1.0.4 · 1.0.5
Antoinebcx Ml-toolkit-ts/preprocessing1.0.2 · 1.0.3
Antoinebcx Ml-toolkit-ts/xgboost1.0.3 · 1.0.4
Beproduct Beproduct/nestjs-auth0.1.10 · 0.1.11 · 0.1.12 · 0.1.13
Christianalares Git Branch Selector1.3.3 · 1.3.4 · 1.3.5 · 1.3.7
Christianalares Git-git-git1.0.10 · 1.0.12 · 1.0.8 · 1.0.9
Christianalares Nextmove-mcp0.1.3 · 0.1.4 · 0.1.5 · 0.1.7
Christianalares Tolka/cli1.0.2 · 1.0.3 · 1.0.4 · 1.0.6
Dirigible Dirigible-ai/sdk0.6.2 · 0.6.3
Guardrailsai Guardrails Ai0.10.1
Kilbot Tallyui/components1.0.1 · 1.0.2 · 1.0.3
Kilbot Tallyui/connector-medusa1.0.1 · 1.0.2 · 1.0.3
Kilbot Tallyui/connector-shopify1.0.1 · 1.0.2 · 1.0.3
Kilbot Tallyui/connector-vendure1.0.1 · 1.0.2 · 1.0.3
Kilbot Tallyui/connector-woocommerce1.0.1 · 1.0.2 · 1.0.3
Kilbot Tallyui/core0.2.1 · 0.2.2 · 0.2.3
Kilbot Tallyui/database1.0.1 · 1.0.2 · 1.0.3
Kilbot Tallyui/pos0.1.1 · 0.1.2 · 0.1.3
Kilbot Tallyui/storage-sqlite0.2.1 · 0.2.2 · 0.2.3
Kilbot Tallyui/theme0.2.1 · 0.2.2 · 0.2.3

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2026-45321 being actively exploited?

Yes. CVE-2026-45321 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 27 May 2026. It has been used in ransomware campaigns.

How severe is CVE-2026-45321?

CVE-2026-45321 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 1.05% probability of exploitation.

Which products are affected by CVE-2026-45321?

Affected products include Abhishake1 Supersurkhet/cli, Abhishake1 Supersurkhet/sdk, Abhishake1 Taskflow-corp/cli, Agentworkhq Agentwork-cli, Antoinebcx Ml-toolkit-ts, and 19 more.

How do I fix CVE-2026-45321?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-45321 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.