EUVD-2026-63998
GHSA-qh39-pj9p-f8w7
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/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
Stored XSS requires low-privilege auth to plant (PR:L); scope changes (S:C) because victim browsers execute the payload; UI:R as victims must visit the sign-in page; no availability impact.
Primary rating from Vendor (9119a7d8-5eab-497f-8521-727c672e3725).
CVSS VectorVendor: 9119a7d8-5eab-497f-8521-727c672e3725
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/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
Lifecycle Timeline
2DescriptionCVE.org
Jet Admin allows an authenticated attacker to inject JavaScript via the sign-in page's scripts and styles option. Injected script is executed in the context of any visiting user's domain.
Articles & Coverage 1
AnalysisAI
Stored cross-site scripting in Jet Admin allows an authenticated attacker to inject arbitrary JavaScript into the sign-in page via the scripts and styles configuration option, with the payload executing in the browser context of every subsequent visitor to that page. The sign-in page is a high-traffic, public-facing endpoint, so any user - including administrators - who visits the login page becomes a victim after the payload is planted. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated Jet Admin session with sufficient privileges to modify the sign-in page scripts and styles configuration. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N) indicates a network-reachable, low-complexity attack requiring low-privilege authentication to plant the payload and passive user interaction (page visit) to trigger it. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who holds a low-privilege authenticated Jet Admin account navigates to the sign-in page configuration and injects a JavaScript payload into the scripts field - for example, a credential-harvesting script that intercepts form submission or exfiltrates document.cookie to an attacker-controlled endpoint. The payload is stored server-side and silently executes in the browser of every user who subsequently visits the sign-in page, including administrators, enabling the attacker to escalate privileges or achieve full account takeover without further interaction. … |
| Remediation | The primary fix is to apply the vendor-released patch addressing this XSS vulnerability - consult the Jet Admin vendor site at https://www.jetadmin.io/ and the CISA CSAF advisory at https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-232-02.json for the specific patched version; no exact fix version was confirmed in the available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all Jet Admin deployments, restrict who can modify the scripts/styles configuration settings, and alert administrators of the risk. …
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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