EUVD-2026-86292
GHSA-p9h3-gvpq-5539
Severity by source
AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
customfields.create is grantable to non-superusers so PR:L not PR:H; victim must open the list (UI:R); stored XSS executing in another user's session crosses privilege boundary (S:C) enabling full account/superuser takeover (C/I/A:H).
Primary rating from Vendor (GitHub_M).
CVSS VectorNVD
Lifecycle Timeline
7DescriptionNVD
Snipe-IT is an IT asset/license management system. Prior to 8.7.0, a user with the customfields.create permission can store markup in CustomField.name, and app/Presenters/AssetPresenter.php assigns that value as an unescaped bootstrap-table header title. When another user opens an asset-list page associated with the fieldset, the stored markup executes on page load in that user's Snipe-IT session. This can expose same-origin data and perform authenticated actions with the victim's privileges, including privilege escalation when a superuser views the affected list. This issue is fixed in version 8.7.0.
AnalysisAI
Stored cross-site scripting in Snipe-IT versions before 8.7.0 lets an authenticated user holding only the customfields.create permission embed HTML/JavaScript in a CustomField.name value, which is rendered unescaped as an asset-list column header title and executes on page load for any user who opens a list tied to the affected fieldset. Since customfields.create is delegable to non-superusers, the injected script runs in a higher-privileged victim's session - the vendor advisory demonstrates an account with no permissions beyond customfields.create issuing authenticated requests in a superuser's session to grant itself superuser rights. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated Snipe-IT account holding the 'customfields.create' permission (which can be delegated to non-superusers), the ability to attach the malicious custom field to a fieldset associated with an asset model, and a second victim user who subsequently opens an asset-list page (e.g. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine, well-substantiated stored-XSS-to-privilege-escalation issue rather than an inflated high-CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Snipe-IT to version 8.7.0 or later - the vendor advisory (https://github.com/grokability/snipe-it/security/advisories/GHSA-p9h3-gvpq-5539) and the fixing commit 58754e4e3b86b58a0c4523012ef04a2ae990d2c8 both confirm 8.7.0 as the patched release, and the commit changes 'title' => $field->name to 'title' => e($field->name) in app/Presenters/AssetPresenter.php (vendor-released patch: 8.7.0). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every Snipe-IT instance in the environment and identify those running versions below 8.7.0, review which accounts currently hold the customfields.create permission (including delegated non-superuser accounts), and temporarily restrict that permission to a small set of trusted administrators. …
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External POC / Exploit Code
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