Is CVE-2026-26081 in the CISA KEV catalog?

No. CVE-2026-26081 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-26081?

CVE-2026-26081 has a CVSS v3 base score of 4.8 (MEDIUM).

How do I fix CVE-2026-26081?

Upgrade haproxy on debian 13 to 3.0.11-1+deb13u2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2026-26081

MEDIUM

4.8

CVSS v3

NVD

Description

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.

CWE-130

How to fix

Remediation Available

haproxyDebian

Fixed in:3.0.11-1+deb13u2CVE-2026-26081

Fixed in:3.2.11-2CVE-2026-26081

haproxyUbuntu

Fixed in:3.0.12-0ubuntu0.25.10.3USN-8036-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Exploit Intelligence

EPSS data unavailable for this CVE.

References

Other references2

Related Vulnerabilities

Other CWE-130 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-14847	High	7.5	83%	KEV	Fix
CVE-2024-39614	High	7.5	29%	-	Fix
CVE-2021-36090	High	7.5	13%	-	Fix
CVE-2021-35516	High	7.5	12%	-	Fix
CVE-2021-35517	High	7.5	11%	-	Fix
CVE-2019-3862	High	7.3	8.1%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-21.