Yüksek CVSS 7.5
CVE-2026-55204: Haproxy: NULL işaretçi başvurusu
Açıklama (NVD)
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. An attacker can trigger HPACK dynamic table insertions under memory pressure to dereference a NULL pointer and crash HAProxy worker processes, causing denial of service.
Özet bilgiler
- Ürün
- Haproxy Haproxy
- CVSS v3.1
- 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS v4.0
- 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS
- %0,48 (yüzdelik 42)
- CWE
- CWE-476
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| haproxy-haproxy | — | — | 2.4.36 |
| haproxy-haproxy | 2.5 | — | 2.6.30 |
| haproxy-haproxy | 2.7 | — | 2.8.25 |
| haproxy-haproxy | 2.9 | — | 3.0.24 |
| haproxy-haproxy | 3.1 | — | 3.2.20 |
| haproxy-haproxy | 3.3 | — | 3.4.1 |