{"schemaVersion":3,"id":"CVE-2026-55204","aliases":["RHSA-2026:55859","RHSA-2026:55860","RHSA-2026:55861","RHSA-2026:55862","UBUNTU-CVE-2026-55204","DEBIAN-CVE-2026-55204","CGA-59pj-prwm-qcw7","CGA-694q-gc8x-55gj","CGA-jc64-72hv-p256","CGA-v744-7mqp-96j4","CGA-63c8-cw58-3fjm","CGA-66hg-g5c2-vmhr","CGA-7gm8-7qrc-j4j3","CGA-7h24-x2hj-rgcq","CGA-fqjh-cr5p-2q86","CGA-h82c-82pj-f3mx","CGA-rh8p-g38x-2r7c","CGA-vfxw-7r5j-fg79","CGA-vx6j-cj6p-m98p","CGA-xh9g-v483-4cc3"],"status":"published","duplicateOf":null,"title":"HAProxy - NULL Pointer Dereference in hpack_dht_insert Function","description":"HAProxy through  3.4.0, fixed in commit 9a6d1fe, contains a null pointer dereference vulnerability in hpack_dht_insert() within src/hpack-tbl.c that fails to validate the return value of hpack_dht_defrag() when the memory pool is exhausted. 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