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NVD description
HAProxy 3.2 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (worker-thread CPU exhaustion) via a truncated HTTP/2 PING frame. h2c_handle_ping in src/mux_h2.c does not check for a short read, unlike the other H2 frame handlers. Because the incomplete frame cannot be processed, its data is never consumed, and the H2 multiplexer tasklet is repeatedly woken by that pending data without making progress. The CPU spins until timeout http-request closes the connection, and an attacker opening many such connections can sustain high CPU usage.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
Attention a la mise a jour de HAProxy 2.4.30-0ubuntu0.22.04.3 Pour corriger CVE-2026-110354 et CVE-2026-110353, ubuntu a backport le patch en 2.4 Mais ca pose de nombreux soucis sur des fichiers un peu plus gros que 24ko avec des troncatures et erreurs 502