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CVE-2026-32239

Cap'n Proto has an integer overflow in KJ-HTTP PUBLISHED

Description (CNA)

Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, a negative Content-Length value was converted to unsigned, treating it as an impossibly large length instead. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in 1.4.0.

Affected (CNA)

Vendor / productVersions
capnproto / capnprotoaffected < 1.4.0

CWE

CWE-444, CWE-190

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.