CVE-2026-105042
Apache Qpid Proton C: Unbounded recursion in parsing AMQP message bodies can lead to crash
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Apache Qpid Proton C: Unbounded recursion in parsing AMQP message bodies can lead to crash
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.
- Record
CVE-2026-105042- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-674
- Updated
- 2026-11-05
EUVDEUVD-2026-112726
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.
- Record
EUVD-2026-112726- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-05
GitHub AdvisoriesGHSA-fr7g-693q-6w7x
A message body that is deeply nested and decoded by pn_message_body() could overflow the stack...
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.
- Record
GHSA-fr7g-693q-6w7x- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-674
- Updated
- 2026-11-06
NVD
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.
- Record
CVE-2026-105042- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-674
- Updated
- 2026-11-05
OSVDEBIAN-CVE-2026-105042
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.
- Record
DEBIAN-CVE-2026-105042- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-06
OSVUBUNTU-CVE-2026-105042
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.
- Record
UBUNTU-CVE-2026-105042- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-07
OSVAZL-111751 No score
CVE-2026-105042 affecting package qpid-proton 0.40.0-15
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.
- Record
AZL-111751- Updated
- 2026-11-05
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
qpid-protonAzure Linux:3 |
through 0.40.0-15 | None known |
qpid-protonDebian:12 |
All versions, plus listed versions 0.37.0-100.37.0-20.37.0-30.37.0-40.37.0-5 Show 4 moreShow less0.37.0-60.37.0-70.37.0-80.37.0-9 |
None known |
qpid-protonDebian:13 |
All versions, plus listed versions 0.37.0-100.37.0-60.37.0-70.37.0-80.37.0-9 |
None known |
qpid-protonDebian:14 |
All versions, plus listed versions 0.37.0-100.37.0-60.37.0-70.37.0-80.37.0-9 |
None known |
qpid-protonUbuntu:16.04:LTS |
All versions, plus listed versions 0.7-20.10-2 |
None known |
qpid-protonUbuntu:18.04:LTS |
All versions, plus listed versions 0.14.0-5.10.14.0-5.1ubuntu1 |
None known |
qpid-protonUbuntu:20.04:LTS |
All versions, plus listed versions 0.22.0-3.20.22.0-3.2build10.22.0-3.30.22.0-3.3build1 |
None known |
qpid-protonUbuntu:22.04:LTS |
All versions, plus listed versions 0.22.0-5.10.22.0-5.1build10.22.0-5.1ubuntu10.22.0-5.1ubuntu2 |
None known |
qpid-protonUbuntu:24.04:LTS |
All versions, plus listed versions 0.37.0-2build10.37.0-2build20.37.0-2build40.37.0-2build5 |
None known |
qpid-protonUbuntu:26.10 |
All versions, plus listed versions 0.37.0-7build10.37.0-80.37.0-90.37.0-9build1 |
None known |
qpid-protonUbuntu:26.04:LTS |
All versions, plus listed versions 0.37.0-60.37.0-6build10.37.0-70.37.0-7build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| severity | CVE List | |
| severity | EUVD, OSV | |
| affected, aliases, facts, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-105042 is a critical vulnerability (CVSS 9.8) in Apache Software Foundation Qpid Proton C, published October 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. No source names a fixed version.
References
lists.apache.org/thread.html/7v54gx7o1ptxcz3h9549w3h9oxo3ns28
openwall.com/lists/oss-security/2026/10/28/23
nvd.nist.gov/vuln/detail/CVE-2026-105042
github.com/advisories/GHSA-fr7g-693q-6w7x
security-tracker.debian.org/tracker/CVE-2026-105042
ubuntu.com/security/CVE-2026-105042
cve.org/CVERecord?id=CVE-2026-105042
issues.apache.org/jira/browse/PROTON-2976