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Dossier · Vulnerability

Actively exploited · CISA KEV

CVE-2026-45321

  1. First PoC
  2. 158 days →First cited attacker

Signals

Exploited in the wild
Yesadded 2026-05-27 · due 2026-06-10 · known ransomware use. An observation, not a forecast.
EPSS · 30-day forecast
1%Chance of exploitation in the next 30 days, 64th percentile of all CVEs. A forecast; KEV outranks it.
CVSS · NVD
not stated by sourcesNo NVD record yet.
Internet exposure
not stated by sourcesNo exposure census on this CVE's dispatches.

Exploits

12 known · links only

GitHub PoCs · by trust, then stars12

  1. fabriziosalmi/tanstack-compromise-checker ↗Trust ok 100

    Shell script to detect TanStack npm supply chain attack indicators (CVE-2026-45321 / GHSA-g7cv-rxg3-hmpx)

    ★ 2 · created 2026-05-16

  2. Intrudify/mini-shai-hulud-scanner ↗Trust ok 100

    Scanner for the Mini Shai-Hulud npm/PyPI supply chain worm (NHS CC-4781 · CVE-2026-45321). Detects gh-token-monitor persistence, payload artefacts, and attacker commits. Python, Bash, PowerShell.

    ★ 2 · created 2026-05-13

  3. nkopylov/tanscript-exploit-check ↗Trust ok 100

    IOC checker for the TanStack/Mini Shai-Hulud npm supply chain attack (CVE-2026-45321)

    ★ 1 · created 2026-05-18

  4. qi-scape/scan-shai-hulud ↗Trust ok 100

    Detect CVE-2026-45321 Mini Shai-Hulud supply chain compromise — scans for 170 npm + 2 PyPI poisoned packages across TanStack, Mistral AI, UiPath, OpenSearch, Guardrails AI

    ★ 1 · created 2026-05-12

  5. shayr1/shai-hulud-scan ↗Trust ok 100

    Claude Code skill to scan machines for Mini Shai-Hulud (CVE-2026-45321) supply chain worm IOCs

    ★ 1 · created 2026-05-12

  6. 7whyex/CVE-2026-45321-Tanstack ↗Trust ok 100

    ★ 0 · created 2026-06-25

  7. Caixa-git/tanstack-shield ↗Trust ok 100

    🛡️ One-command scanner for CVE-2026-45321 — TanStack npm supply-chain attack

    ★ 0 · created 2026-05-12

  8. digi4care/shai-scan ↗Trust ok 100

    Zero-dependency CLI scanner for npm/PyPI supply chain compromises. Detects compromised packages in lockfiles and system-level IOCs from attacks like Mini Shai-Hulud (CVE-2026-45321).

    ★ 0 · created 2026-05-16

  9. prashanthnataraj/mini-shai-hulud-detector ↗Trust ok 100

    One-command scanner for the Mini Shai-Hulud npm supply-chain worm (CVE-2026-45321). Detect before rotating tokens.

    ★ 0 · created 2026-05-20

  10. renewablehacking/CVE-2026-45321-Tanstack ↗Trust ok 100

    ★ 0 · created 2026-05-25

  11. ry-allan/tanstack-compromise-checker ↗Trust ok 100

    Detects CVE-2026-45321 (TanStack supply chain compromise) and Mini Shai-Hulud worm artifacts. Scans node_modules, lockfiles, persistence hooks (Claude Code, VS Code, systemd, LaunchAgent), GitHub workflows, git history, C2 domains, and AI tool configs.

    ★ 0 · created 2026-05-12

  12. Yomisana/are-you-get-tanstack-attack ↗Trust ok 100

    Are you get Tanstack Supply chain attack attack of 5/11? CVE-2026-45321 / GHSA-g7cv-rxg3-hmpx

    ★ 0 · created 2026-05-12

Fake proof-of-concept repositories have been used to deliver malware to the researchers who run them. The trust verdict is our engine's heuristic over the repository (account age, what it ships, how its stars arrived); it is a reason to read the code first, not a finding about its author.

On the wire

0 dispatches

No dispatch on our wire has named this CVE yet.

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