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Vulnerability DatabaseCVE-2026-33555
CVE-2026-33555:
HAProxy vulnerability analysis and mitigation
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.
Source: NVD
Related HAProxy vulnerabilities:
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