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Solution
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Workaround
No workaround given by the vendor.
Tue, 14 Apr 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 14 Apr 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | haproxy: HAProxy: Request smuggling via HTTP/3 parser desynchronization | |
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Mon, 13 Apr 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An issue was discovered in HAProxy before 3.3.6. The HTTP/3 parser does not check that the received body length matches a previously announced content-length when the stream is closed via a frame with an empty payload. This can cause desynchronization issues with the backend server and could be used for request smuggling. The earliest affected version is 2.6. | |
| First Time appeared |
Haproxy
Haproxy haproxy |
|
| Weaknesses | CWE-130 | |
| CPEs | cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Haproxy
Haproxy haproxy |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-04-14T13:22:39.253Z
Reserved: 2026-03-22T00:00:00.000Z
Link: CVE-2026-33555
Updated: 2026-04-14T13:22:34.930Z
Status : Received
Published: 2026-04-13T17:16:28.237
Modified: 2026-04-13T17:16:28.237
Link: CVE-2026-33555
OpenCVE Enrichment
No data.