What is CVE-2026-26081?

CVE-2026-26081 is a medium-severity vulnerability in Haproxy Aloha, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 4.8/10. Published 2026-07-20.

How severe is CVE-2026-26081?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Haproxy Aloha

CVE-2026-26081

HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEW_TOKEN format. HAProxy Enterprise and ALOHA are also affected.

EPSS: 0.005 (39.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L.

Affected products

Haproxy Aloha
Haproxy — versions 3.0, 3.1, 3.2
Haproxy Haproxy_enterprise — versions 3.0r1, 3.1r1, 3.2r1

Weakness classification (CWE)

CWE-130 — Improper Handling of Length Parameter Inconsistency

References

cve@mitre.org (Patch, Vendor Advisory)
cve@mitre.org (Product)

Frequently asked questions

What is CVE-2026-26081?: CVE-2026-26081 is a medium-severity vulnerability in Haproxy Aloha, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 4.8/10. Published 2026-07-20.
How severe is CVE-2026-26081?: Medium severity. CVSS v3 base score is 4.8 out of 10.