CVE-2026-66274
Apache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflow
CVE-2026-66274 is a high vulnerability (CVSS 7.5) in Apache Qpid Proton-j, published August 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.77%, the 56th percentile. Fixed in org.apache.qpid:proton-j 0.35.0.
- Severity
- 7.5 HighCVSS 3.1, CVE List
- Exploit chance
- 0.77%EPSS, 56th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.35.0org.apache.qpid:proton-j +1 more
Description
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Proton-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, 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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.qpid:proton-jMaven | before 0.35.0 | 0.35.0 |
org.apache.qpid:proton-jMaven | before 0.35.0, plus listed versions 0.100.11.00.11.10.12.00.12.1 Show 45 moreShow less0.12.20.13.00.13.10.14.00.15.00.16.00.17.00.18.00.19.00.20.00.21.00.22.00.23.00.24.00.25.00.26.00.27.00.27.10.27.20.27.30.28.00.28.10.29.00.30.00.31.00.32.00.33.00.33.10.33.100.33.20.33.30.33.40.33.50.33.60.33.70.33.80.33.90.34.00.34.10.40.50.60.70.80.9 | 0.35.0 |
What each source reports
CVE List Score used
Apache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflow
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Proton-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, which fixes the issue.
- Record
CVE-2026-66274- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-674
- Updated
- 2026-11-02
EUVDEUVD-2026-53082
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Proton-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, which fixes the issue.
- Record
EUVD-2026-53082- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-p2gc-fm5w-94jj
Apache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflow
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Proton-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, which fixes the issue.
- Record
GHSA-p2gc-fm5w-94jj- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-674
- Updated
- 2026-11-03
NVD
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Proton-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, which fixes the issue.
- Record
CVE-2026-66274- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-674
- Updated
- 2026-11-02
OSV
Apache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflow
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Proton-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, which fixes the issue.
- Record
CVE-2026-66274- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-674
- Updated
- 2026-11-03
OSVGHSA-p2gc-fm5w-94jj
Apache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflow
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.
This issue affects Apache Qpid Proton-J: through 0.34.1.
Users are recommended to upgrade to version 0.35.0, which fixes the issue.
- Record
GHSA-p2gc-fm5w-94jj- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-674
- Updated
- 2026-11-03
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, references | OSV | |
| affected, facts, references | GitHub Advisories | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
lists.apache.org/thread/h7xolzws2by2qhdjf7scbx87foxojb5h
openwall.com/lists/oss-security/2026/08/04/10
nvd.nist.gov/vuln/detail/CVE-2026-66274
github.com/apache/qpid-proton-j/commit/92047419cc87bab6220e7adeb354958d8109618e
repo.maven.apache.org/maven2
Left out here: 1 version. The JSON record has them.