CVE-2026-114230 Apache Qpid Proton C: Potential authentication bypass: regular AMQP frames can be sent as SASL frames
CriticalCVSS 9.8
EPSS 0.50%
- Published
- Updated
- Exploit status
- No public exploit known
Description
When dispatching SASL frames to authenticate the peer, Proton will also dispatch AMQP frames if they claim to be SASL frames. This allows authentication bypass. However there will be no user name set so the effects depend on how the application deals with this condition - which otherwise means that authentication has not completed yet.
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache.org/qpid-proton | <= 0.40.0 | No fix listed |
| debian/qpid-proton(Debian:12) | All versions | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-10 | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-2 | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-3 | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-4 | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-5 | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-6 | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-7 | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-8 | No fix listed |
| debian/qpid-proton(Debian:12) | = 0.37.0-9 | No fix listed |
| debian/qpid-proton(Debian:13) | All versions | No fix listed |
| debian/qpid-proton(Debian:13) | = 0.37.0-10 | No fix listed |
| debian/qpid-proton(Debian:13) | = 0.37.0-6 | No fix listed |
| debian/qpid-proton(Debian:13) | = 0.37.0-7 | No fix listed |
| debian/qpid-proton(Debian:13) | = 0.37.0-8 | No fix listed |
| debian/qpid-proton(Debian:13) | = 0.37.0-9 | No fix listed |
| debian/qpid-proton(Debian:14) | All versions | No fix listed |
| debian/qpid-proton(Debian:14) | = 0.37.0-10 | No fix listed |
| debian/qpid-proton(Debian:14) | = 0.37.0-6 | No fix listed |
| debian/qpid-proton(Debian:14) | = 0.37.0-7 | No fix listed |
| debian/qpid-proton(Debian:14) | = 0.37.0-8 | No fix listed |
| debian/qpid-proton(Debian:14) | = 0.37.0-9 | No fix listed |
| ubuntu/qpid-proton(Ubuntu:22.04) | All versions | No fix listed |
| ubuntu/qpid-proton(Ubuntu:24.04) | All versions | No fix listed |
Show 2 more
| Product | Affected versions | Fixed in |
|---|---|---|
| ubuntu/qpid-proton(Ubuntu:26.04) | All versions | No fix listed |
| ubuntu/qpid-proton(Ubuntu:26.10) | All versions | No fix listed |
References
- lists.apache.org vendor-advisory
- www.openwall.com
- Red Hat CVE page vendor-advisory
- Red Hat Bugzilla 2563307 issue-tracking
- www.cve.org
- nvd.nist.gov
- Debian Security Tracker CVE-2026-114230 vendor-advisory
- Ubuntu CVE tracker vendor-advisory
- bugs.debian.org issue-tracking