CVE-2026-26027: GLPI is a free asset and IT management software package

Routine

HIGH 7.5UPGRADE

CVE-2026-26027 is a high-severity flaw (CVSS 7.5) affecting glpi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GLPI is a free asset and IT management software package. From 11.0.0 to before 11.0.6, an unauthenticated user can store an XSS payload through the inventory endpoint. This vulnerability is fixed in 11.0.6.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-79, CWE-116, CWE-306
Published	2026-04-06
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: glpi-project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-06 15:17 UTCPublished CVE record published
2026-06-17 10:25 UTCUpdated Record last modified

glpi-project glpi UPGRADE

Affected: >= 11.0.0 and < 11.0.6

Fixed in: 11.0.6

Safe to downgrade to: a release before 11.0.0

1. Check installed version

apt-cache policy glpi || rpm -q glpi || glpi --version

2. UPGRADE to 11.0.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade glpi

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade glpi

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 11.0.0 (Debian / Ubuntu)

apt-cache madison glpi sudo apt install glpi=<VERSION_BEFORE_11.0.0> sudo apt-mark hold glpi

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list glpi sudo dnf downgrade glpi-<VERSION_BEFORE_11.0.0> sudo dnf versionlock add glpi

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-26027?

glpi: upgrade to 11.0.6. Exact commands for each OS are on this page.

Is CVE-2026-26027 being exploited?

CVE-2026-26027 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-26027 affect?

CVE-2026-26027 affects glpi. Severity is high (CVSS 7.5). GLPI is a free asset and IT management software package. From 11.0.0 to before 11.0.6, an unauthenticated user can store an XSS payload through the inventory endpoint. This vulnerability is fixed in 11.0.6.

How urgent is CVE-2026-26027?

Priority 28/100. High severity

Related CVEs

CVE-2026-26026 CRITICAL 9.1 UPGRADE GLPI is a free asset and IT management software package
CVE-2026-29047 HIGH 7.2 UPGRADE GLPI is a free asset and IT management software package
CVE-2026-25932 HIGH 7.2 UPGRADE GLPI is a Free Asset and IT Management Software package
CVE-2026-32312 MEDIUM 4.3 UPGRADE GLPI is a free asset and IT management software package
CVE-2026-26263 HIGH 8.1 UPGRADE GLPI is a free asset and IT management software package

References

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