Name: CVE-2026-91101: Improper Validation of Array Index
Creator: Rapid7
Published: 2026-09-16T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-91101, CWE-129, CVSS 9.8, EPSS 0.00964

HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.

CVSS Details

CVSS 4.0 Base Score: 5.1 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade hplip-commonUpgrade hplip-libsUpgrade libsane-hpaioUpgrade hplip	Oct 18, 2026	Oct 14, 2026
Alpine Linux	—	Upgrade hplip	Oct 20, 2026	Sep 16, 2026
Oracle_linux	—	Upgrade hplip-commonUpgrade hplip-libsUpgrade libsane-hpaioUpgrade hplip-guiUpgrade hplip	Oct 22, 2026	Sep 16, 2026
Redhat_linux	—	Upgrade libsane-hpaio-debuginfoUpgrade hplip-commonUpgrade hplip-libs-debuginfoNo solution existsUpgrade hplipUpgrade libsane-hpaioUpgrade hplip-libsUpgrade hplip-debuginfoUpgrade hplip-debugsource	Sep 21, 2026	Sep 16, 2026
Rocky_linux	—	Upgrade hplip-debugsourceUpgrade hplipUpgrade hplip-libsUpgrade libsane-hpaioUpgrade hplip-debuginfoUpgrade hplip-libs-debuginfoUpgrade hplip-commonUpgrade libsane-hpaio-debuginfo	Oct 19, 2026	Oct 15, 2026

Prioritize with Active Threat Intelligence

With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.

Explore Intelligence Hub

MDR Buyer's Guide

Global Threat Landscape Report

Grow your business