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CVE-2026-9147

uproot 5.7.4 and prior Code Injection via TStreamerInfo Metadata

Published
Last modified
published
Not listed in CISA KEV
Fix
Fix or patch referenced
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

uproot dynamically generates Python class source code from ROOT TStreamerInfo records in a file and compiles it at runtime. Some file-controlled streamer metadata fields (for example, streamer element names) are interpolated into the generated Python source without safe quoting via repr() or the !r format specifier. An attacker who can supply a crafted ROOT file can place Python expression-breaking content into a streamer metadata field. When uproot generates and invokes the corresponding reader method, the injected Python expression is evaluated in the context of the process opening the file, resulting in arbitrary Python code execution in applications that open or process attacker-controlled ROOT files with affected uproot code paths.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • scikit-hep uproot

    through 5.7.4

References 5

GitHub · SaiTeja-Erukude/CVE-2026-9147-uproot-rce

GitHub · scikit-hep/uproot5

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