Netscape Enterprise 3.63 SnoopServlet servlet/SnoopServlet Query String Reflected cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Netscape Enterprise 3.63 and classified as problematic. This vulnerability affects some unknown processing of the file servlet/SnoopServlet of the component SnoopServlet. The manipulation as part of a Query String leads to a cross site scripting vulnerability (Reflected). The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

servlet/SnoopServlet (a servlet installed by default) in Netscape Enterprise 3.63 has reflected XSS via an arbitrary parameter=[XSS] in the query string. A remote unauthenticated attacker could potentially exploit this vulnerability to supply malicious HTML or JavaScript code to a vulnerable web application, which is then reflected back to the victim and executed by the web browser. NOTE: this product is discontinued.

The bug was discovered 11/12/2018. The weakness was published 01/31/2019 as not defined mailinglist post (Full-Disclosure). The advisory is shared for download at This vulnerability was named CVE-2018-18940 since 11/05/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability was handled as a non-public zero-day exploit for at least 80 days. During that time the estimated underground price was around $0-$5k.

The problem might be mitigated by replacing the product with as an alternative.

Similar entries are available at VDB-238343, VDB-238367, VDB-238368 and VDB-242235.






CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
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Name: Reflected
Class: Cross site scripting / Reflected
CWE: CWE-79 / CWE-74 / CWE-707

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Recommended: Alternative
Status: 🔍

0-Day Time: 🔍


11/05/2018 🔍
11/12/2018 +7 days 🔍
01/31/2019 +80 days 🔍
01/31/2019 +0 days 🔍
02/01/2019 +1 days 🔍
07/04/2023 +1614 days 🔍



Advisory: 150262
Status: Not defined

CVE: CVE-2018-18940 (🔍)
See also: 🔍


Created: 02/01/2019 07:53 AM
Updated: 07/04/2023 09:42 AM
Changes: 02/01/2019 07:53 AM (61), 05/07/2020 09:22 AM (1), 07/04/2023 09:42 AM (3)
Complete: 🔍
Cache ID: 44:3E4:40


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