EUVD-2026-39605
GHSA-8xrw-qpv5-m4qm
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Reflected XSS via crafted URL requires no auth and is low complexity once the parameter is known; scope changes to victim browser; no availability impact.
Primary rating from Vendor (hackerone).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
2DescriptionNVD
A missing sanitisation vulnerability exists with user input in the stats-video.php script. The way URLs to this script were constructed did not follow best practices, and the output of the Smarty custom helper function url was neither properly encoded nor sanitised, allowing user‑supplied input to be reflected without escaping.
AnalysisAI
Reflected cross-site scripting in Revive Adserver's stats-video.php script allows remote attackers to inject arbitrary JavaScript into victim browsers by delivering a crafted URL. The Smarty template engine's custom url helper function emits attacker-controlled values without HTML encoding or sanitization, and the URL construction pattern for this endpoint exposes user input directly in rendered output. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to interact with a specially crafted URL pointing to the stats-video.php script (UI:R per CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD-assigned CVSS 3.0 score is 4.7 (Medium) with vector AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker identifies the vulnerable parameter in the stats-video.php URL and crafts a link embedding a JavaScript payload (e.g., a cookie-stealing script) that passes through the Smarty `url` helper without encoding. The attacker then delivers this URL to a victim - typically via email, chat, or a compromised third-party page - and when the victim's browser requests the URL, the adserver reflects the payload back in the response, executing it in the victim's browser session under the adserver's origin. … |
| Remediation | The primary fix is to apply output encoding to all values emitted by the Smarty `url` custom helper function in stats-video.php, and to audit other Smarty helper outputs for the same pattern. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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