crossenv JSON Deserialization RCE via object_hook with PoC
Security Advisory
Critical
crossenv
Affected:
- crossenv < 0.4.0
- crossenv/parsers < 0.1.0
Fixed in:
- crossenv >= 0.4.0
- crossenv/parsers >= 0.1.0
Referenced CVEs:
CVE-2026-54566 · 8.5
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