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.

CVE-2026-26081 is fixed in 2 products on 1 platform, first by DSA-6130-1, released February 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

4.8

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0048

41st percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
haproxy · Debian 13.5 (trixie)	3.0.11-1+deb13u2	DSA-6130-1	Feb 12, 2026
haproxy · Debian 14	3.2.11-2	DEBIAN-CVE-2026-26081	Jul 21, 2026
haproxy · Ubuntu 25.10 (questing)	3.0.12-0ubuntu0.25.10.3	haproxy 3.0.12-0ubuntu0.25.10.3	Mar 12, 2026
haproxy · opensuse-leap 16.0	3.2.12+git0.6011f448e-160000.1.1	OPENSUSE-SU-2026:20290-1	Feb 27, 2026
haproxy · sles 16.0	3.2.12+git0.6011f448e-160000.1.1	SUSE-SU-2026:20616-1	Feb 27, 2026
vim-haproxy · Ubuntu 25.10 (questing)	3.0.12-0ubuntu0.25.10.3	vim-haproxy 3.0.12-0ubuntu0.25.10.3	Mar 12, 2026

Details

Published
February 11, 2026
Weakness
Improper Handling of Length Parameter Inconsistency
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26081

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