CVE-2026-26027
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedGLPI 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceGLPI versions 11.0.0 through 11.0.5 contain a stored XSS vulnerability in the inventory endpoint that allows unauthenticated attackers to inject malicious JavaScript payloads. The injected script persists in the system and executes when other users access the compromised inventory data.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 11.0.0, < 11.0.6CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Determine installed GLPI versionLocate the version file in your GLPI installation directory, typically at 'version.php' or check the footer of the GLPI web interface for the version numberAffected if The installed version is 11.0.0, 11.0.1, 11.0.2, 11.0.3, 11.0.4, or 11.0.5
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Verify inventory feature is enabledAccess the GLPI administration panel and navigate to Setup > General > Inventory to confirm the inventory feature is turned onAffected if The inventory feature is enabled and accessible to unauthenticated users
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Check inventory endpoint accessibilityAttempt to access the inventory endpoint URL (typically /front/inventory.php or /ajax/inventory.php) without authentication to determine if it accepts external inputAffected if The endpoint is reachable without authentication and accepts POST or GET parameters containing inventory data
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Review recent inventory imports for suspicious contentExamine the inventory import history in GLPI (Administration > Inventory > Import History) for any unexpected or encoded JavaScript tags, script elements, or event handler attributes in imported dataAffected if Any inventory records contain unescaped HTML tags, script elements, or JavaScript event handlers in data fields
You are affected if your GLPI version is 11.0.0 through 11.0.5 and the inventory endpoint is accessible to unauthenticated users or has accepted external inventory data.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped11.0.6
Upgrade GLPI to version 11.0.6 or later to apply the security patch. Until then, consider restricting access to the inventory endpoint or implementing WAF rules to block suspicious input.
11.0.6
- 1. Back up your current GLPI installation and database before proceeding with any upgrade.
- 2. Download GLPI version 11.0.6 from the official source (github.com/glpi-project/glpi or get.glpi-project.org).
- 3. Follow the standard GLPI upgrade procedure: replace the existing files with the new version 11.0.6 files, keeping the config directory intact.
- 4. Run the migration scripts if prompted during the upgrade process.
- 5. Verify the upgrade was successful by accessing the GLPI interface.
- 6. Test the inventory endpoint to confirm the XSS vulnerability is no longer present.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-26027 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-26027 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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