EUVD-2026-72191
GHSA-h6hc-9p4p-wf6h
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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
Network-accessible login page requires no auth (PR:N), victim must follow crafted link (UI:R), scope changes to victim's browser (S:C) with low confidentiality and integrity impact.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
5DescriptionCVE.org
A security vulnerability has been detected in FastAdmin up to 1.2.0.20210401_beta. Affected is the function register/login of the file application/index/controller/User.php of the component User Controller. Such manipulation of the argument url leads to cross site scripting. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. Upgrading to version 1.2.1.20210731_beta is able to address this issue. The name of the patch is b3d32e2bf3637488cfe2fc58a27a9d2475b2b51b. It is recommended to upgrade the affected component.
AnalysisAI
Cross-site scripting in FastAdmin's User Controller (versions up to 1.2.0.20210401_beta) allows remote unauthenticated attackers to inject arbitrary JavaScript by crafting a malicious url redirect parameter on the login or register endpoint. The commit diff confirms the $url variable was echoed unescaped into HTML attribute contexts and a JavaScript location.href assignment in three template files, enabling javascript: URI injection in addition to classic reflected XSS. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required - the vulnerability exists on the public-facing login and register pages, accessible to any remote unauthenticated user. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 (AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N) accurately characterizes a reflected XSS requiring no authentication but mandating user interaction - a victim must follow a crafted URL to trigger execution. … 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 FastAdmin to version 1.2.1.20210731_beta or later, which applies the `|htmlentities` template filter to all three vulnerable output points via commit b3d32e2bf3637488cfe2fc58a27a9d2475b2b51b. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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