Unscored severity · published Oct 29, 2026
CVE-2026-105042
Apache Qpid Proton C: Unbounded recursion in parsing AMQP message bodies can lead to crash
New
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CVSS
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EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AQ
Apache Qpid Proton C · Apache Software Foundation
through 0.40.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105042
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105042
vendor-advisory
https://lists.apache.org/thread.html/7v54gx7o1ptxcz3h9549w3h9oxo3ns28
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