Not yet scoredPublished Oct 29, 2026

CVE-2026-115942Apache Qpid Proton C: Verifying non compliant TLS wildcard cert can cause stack buffer overflow read

Updated under an hour ago (Oct 30, 2026, 2:30 AM ET)

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It affects Apache Software Foundation Apache Qpid Proton C. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS: Not yet scored
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: apache
NVD analysis: Deferred
Record last updated: Oct 29, 2026
First seen by InfoSec Signals: Oct 29, 2026

Affected products

Affected products

Apache Software Foundation Apache Qpid Proton C apache_software_foundation:apache_qpid_proton_c (from the name)	through 0.40.0	CNA record

References

References

https://lists.apache.org/thread.html/5z8x4c1939rxs5hod7q7gvgdmjd7p7pt	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/28/25

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.