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HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled. (CVE-2026-26080)

0
Low
Published: 08/26/2026 (08/26/2026, 08:42:44 UTC)
Source: GCVE Database
Product: haproxy

Description

HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled. HAProxy Enterprise and ALOHA are also affected.

Affected software

GitHub Actionsmore threats →ai
haproxy/haproxy
pkg:github/haproxy/haproxy
Affected versions
>=3.2.0 <3.3.3

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/22/2026, 14:18:58 UTC

Technical Analysis

This advisory covers a security update to the haproxy RPM packages included in Red Hat Hardened Images. The update to haproxy-3.0.25-0.1.1.hum1 addresses vulnerabilities tracked under CVE-2026-26080 and CVE-2026-26081. The vulnerabilities relate to issues categorized under CWE-252 (Unchecked Return Value), CWE-835 (Loop with Unreachable Exit Condition), and CWE-120 (Buffer Copy without Checking Size of Input). The affected versions include haproxy versions 3.0 and versions from 3.2.0 up to but not including 3.3.3. Red Hat provides this update for aarch64 and x86_64 architectures. No active exploitation is known, and the update is available to mitigate these issues.

Potential Impact

The vulnerabilities could potentially allow improper handling of certain conditions or buffer operations within haproxy, which may lead to unexpected behavior or security weaknesses. However, no known exploits are reported in the wild, and the overall severity is assessed as medium by Red Hat and low by the GCVE database. The impact is limited to the affected haproxy versions within Red Hat Hardened Images on specified architectures.

Mitigation Recommendations

A patch is available and should be applied to affected systems. Red Hat has released haproxy version 3.0.25-0.1.1.hum1 for aarch64 and x86_64 architectures as part of the Hardened Images RPM update. Users should follow Red Hat's official update procedures as detailed in the advisory at https://images.redhat.com/. No additional mitigation steps are indicated by the vendor advisory.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-fhrv-3q89-79q6
Osv Schema Version
1.4.0
Aliases
["CVE-2026-26080"]
Ecosystems
[]
Database Specific Severity
LOW
Cvss Version
3.1

Threat ID: 6a5e79e92a4a8d59899baf37

Added to database: 07/20/2026, 19:41:29 UTC

Last enriched: 08/22/2026, 14:18:58 UTC

Last updated: 09/03/2026, 10:52:08 UTC

Views: 81

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