CVE-2026-33555
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 4epss 0.3%
probabilidad de explotación
0.3%top 78% de las CVE
explotación observada
noninguna fuente lo reporta
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
Productos afectados
HAProxy · HAProxyReferencias
https://github.com/haproxy/haproxy/commit/05a295441c621089ffa4318daf0dbca2dd756a84https://r3verii.github.io/cve/2026/04/14/haproxy-h3-standalone-fin-smuggling.htmlhttps://www.haproxy.com/documentation/haproxy-aloha/changelog/https://www.haproxy.orghttps://www.mail-archive.com/haproxy@formilux.org/msg46752.html