Apache Qpid Proton C: Unbounded recursion in parsing AMQP message bodies can lead to crash
Impact
Apache Qpid Proton C versions through 0.40.0 have an unbounded recursion weakness in parsing AMQP message bodies, which can cause a crash. The issue is fixed in version 0.41.1. A crash may occur when decoding deeply nested message bodies.
Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.Affected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
Apache Software Foundation · apache
Apache Qpid Proton C
1 range
Apache Software Foundation · apache
Apache Qpid Proton C
Package identity
pkg:software-id/apache.org/qpid-protonIdentity supplied by apache. Version matching requires compatible range evidence.
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affected
0 → through 0.40.0
semver versions
Other versions: unaffected
Original source description
A message body that is deeply nested and decoded by pn_message_body() could overflow the stack and cause a crash.
This issue affects Apache Qpid Proton C: through 0.40.0.
Users are recommended to upgrade to version 0.41.1, which fixes the issue.
Inside the record
Evidence available
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Original records
CVE-2026-105042View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Underlying weaknesses
The source’s classification of what caused the vulnerability.
Contributing organizations · 2
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What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.