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CVE-2026-33555: haproxy from 2.6.0 (inclusive), before 3.3.6 (exclusive); +1 more affected products
CVE-2026-33555. CVSS 3.1 base score 5.8 (MEDIUM, NVD). EPSS 0.00577 (percentile 0.46365), scored 17-Oct-2026.
Affected technology
haproxy · from 2.6.0 (inclusive), before 3.3.6 (exclusive)
haproxy
HAProxy · 2.6 to before 3.3.6
HAProxy
Description’s affected range: before 3.3.6
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Vendor/CNA’s CVSS 3.1 assessment (base score 4.0/10) rates confidentiality and availability impact as none; integrity impact as low. NVD’s CVSS 3.1 assessment (base score 5.8/10) rates confidentiality and availability impact as none; integrity impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-130
- CCR priority
- 23.3 /100 (P4)
- CVSS 3.1
- 5.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N · NVD
- EPSS
- 0.00577 · percentile 0.46365 · 2026-10-17
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-18 20:23:06.032219+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-33555.html