EUVD-2026-78254
GHSA-mg8g-x4fv-24jg
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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
Authenticated submission (PR:L), victim must view content (UI:R), scope changes to victim's browser session (S:C) enabling token theft (C:L) and DOM manipulation (I:L).
Primary rating from Vendor (FSI).
CVSS VectorVendor: FSI
Lifecycle Timeline
1DescriptionCVE.org
Improper input validation vulnerability in bizwell xClick allows Stored XSS.
This issue affects xClick: R2, R3, and R3.1.
AnalysisAI
Stored XSS in bizwell xClick groupware allows authenticated low-privileged users to inject malicious scripts that execute in the browsers of other users who view the affected content. The flaw stems from improper input validation (CWE-20) across xClick releases R2, R3, and R3.1. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated account with at least low-privilege access to xClick (PR:L per CVSS 4.0 vector) - an unauthenticated external attacker cannot directly inject payloads. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.1 (Medium) aligns reasonably with the actual risk profile. … 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 exact patched version is identified in the available data - patch availability should be confirmed directly with bizwell via their product page at https://www.bizwell.net/solutions/groupware and the NVD advisory at https://nvd.nist.gov/vuln/detail/CVE-2026-88261. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
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