Unscored severity · published Oct 29, 2026
CVE-2026-115942
Apache Qpid Proton C: Verifying non compliant TLS wildcard cert can cause stack buffer overflow read
New
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CVSS
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EPSS
No
On KEV
Description
A misconfigured wildcard TLS certificate causes a stack read overflow.
This issue does not affect any wildcard certificate issued to the RFC9525 standard - the fix only accepts certificates that comply to this standard.
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-2026-115942
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-115942
vendor-advisory
https://lists.apache.org/thread.html/5z8x4c1939rxs5hod7q7gvgdmjd7p7pt
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