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node2shell (CVE-2026-111497): What to Patch and How to Find Exposed Services
Overview
Cycode reports a memory-safety flaw in the Brotli decoder included with Node.js and Bun. Its advisory describes potential crashes, information exposure and code execution when applications process hostile compressed input. Exposure depends on the runtime version and whether untrusted data reaches that decoder.
Key facts
- The recommended remediation is a patched runtime followed by rebuilding affected application images.
- Request-body middleware and code fetching user-controlled destinations are among the paths the report recommends checking.
- The report distinguishes the bundled native decoder from the similarly named npm package.
Key figures
- 22.23.4 — Patched Node.js release listed for the supported 22.x line
- 24.22.1 — Patched Node.js release listed for the supported 24.x line
- 26.12.1 — Patched Node.js release listed for the supported 26.x line
- 1.4.4 — Bun release identified as containing the decoder fix
Context
Cycode recommends mapping vulnerable images to their owning repositories so teams can prioritize reachable services.
What remains uncertain
The article reported no observed exploitation as of October 23. A vulnerable version alone does not establish external reachability.
A concise AI-assisted digest of selected facts. The original publication may contain additional detail and later updates. Company data below is a separate ApplyDjinn observation.
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What else is visible for Cycode?
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Current roles
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30-day current-market scope
Company stories · 30d
11
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Attention records · 7d
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Observed hiring change
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0% of currently observed roles are technical.
Vacancy history uses saved daily snapshots through 2026-11-01. News counts are dated publications; attention counts are matched records, not search volume or prediction probabilities.