EUVD-2026-66170
GHSA-mprr-9693-w55v
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Matches input vector: network-reachable stored XSS requiring low-privilege auth (PR:L), victim page load (UI:R), and scope change affecting other users' browsers (S:C).
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
A Stored XSS vulnerability in the custom bonus title feature in GazellePW (GazellePosterWall) commit 86c4bedf727691b5a97af42a4864869d18446449 allows remote authenticated users to inject arbitrary JavaScript via the title parameter in /bonus.php and /user.php?action=staff_tool.
AnalysisAI
Stored cross-site scripting in GazellePW's custom bonus title feature allows authenticated users with low privileges to inject persistent JavaScript payloads that execute in the browsers of other users - including administrators - who view bonus management pages. Affected is a specific commit (86c4bedf) of the GazellePosterWall PHP application. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the attacker hold a valid account on the target GazellePW instance with permissions to set a custom bonus title - the PR:L CVSS metric confirms low-privilege authenticated access is sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The base CVSS 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N) accurately captures the stored XSS mechanics but materially understates operational risk. … 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 | No vendor-released patched version has been independently confirmed from the available data; operators should audit the repository for commits that sanitize or encode the 'title' parameter in /bonus.php and the staff_tool action of /user.php before deploying any update. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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