Public proof of conceptFix available

CVE-2026-91097

Q: Is CVE-2026-91097 actively exploited?

Active exploitation of CVE-2026-91097 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-91097?

CVE-2026-91097 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2026-09-16
Fixed in3.26.6
WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2026-09-1619:18CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-91097?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-91097?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Hp linux imaging and printing

Branch	Affected	Fixed in	Source
3.26	< 3.26.6	3.26.6	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

hplipAlmaLinux:10all versions · fixed in 3.26.6-1.el10_2.3and 3 other packages
hplipAlmaLinux:9all versions · fixed in 3.26.6-1.el9_8.3and 3 other packages
hplipAlmaLinux:8all versions · fixed in 3.26.6-3.el8_10and 4 other packages

Vendor advisories

CVE-2026-91097 Red Hat Product Security28 products fixed · 19 known affected
hplip: HPLIP: Multiple vulnerabilities enable remote code execution and privilege escalation
hpijs as a component of Red Hat Enterprise Linux 6 · hplip as a component of Red Hat Enterprise Linux 6 · hplip-common as a component of Red Hat Enterprise Linux 6 · +16 more
RHSA-2026:82882 Red Hat Product Security15 products fixed
Red Hat Security Advisory: hplip security, bug fix, and enhancement update
RHSA-2026:82883 Red Hat Product Security13 products fixed
Red Hat Security Advisory: hplip security, bug fix, and enhancement update

Full record on NVD

Fix

Update Hp linux imaging and printing to 3.26.6
Vendor fix Red Hat Product Security RHSA-2026:82882 · 15 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround from the vendor Red Hat Product Security RHSA-2026:82882 · 40 productsTo mitigate this issue, if HPLIP functionality is not required, consider removing the `hplip` package. This can be done using the following command: `sudo dnf remove hplip` Removing this package will disable HP printer support and related utilities.
No fix available, says the vendor Red Hat Product Security CVE-2026-91097 · 12 productsAffected
No fix planned, says the vendor Red Hat Product Security CVE-2026-91097 · 7 productsOut of support scope

Advisories and patches

support.hp.comVendor Advisory

Detection

read 2026-10-23 19:25 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 2 repositories, unverifiedmurrez/HP-HPLIP-Mass-CVE-checker-2026-09-Nxploited/CVE-2026-91097-CVE-2026-91106

Sources

CISA-ADPSSVC decisionnone2026-09-17
OpenCVESSVC decisionnone—
CNACVSS 4.07read 2026-10-23
NVDCVSS 3.19.8read 2026-10-23
CNAweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-22
PoC-in-GitHubproof of concept2read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/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
Published: 2026-09-16
Last Modified: 2026-09-21
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-91097?

Is CVE-2026-91097 actively exploited?

Active exploitation of CVE-2026-91097 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-91097?

CVE-2026-91097 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Running hplip? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database