What is the CVSS score of CVE-2019-16330?

CVE-2019-16330 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2019-16330?

Yes, a public proof-of-concept exploit is available for CVE-2019-16330. Prioritise patching immediately. EPSS: 0.6%.

Express Accounts Accounting CVE-2019-16330

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2019-10-17 cve@mitre.org

XSS Express Accounts Accounting

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Oct 17, 2019 - 17:15 nvd

MEDIUM 5.4

DescriptionNVD

In NCH Express Accounts Accounting v7.02, persistent cross site scripting (XSS) exists in Invoices/Sales Orders/Items/Customers/Quotes input field. An authenticated unprivileged user can add/modify the Invoices/Sales Orders/Items/Customers/Quotes fields parameter to inject arbitrary JavaScript.

AnalysisAI

In NCH Express Accounts Accounting v7.02, persistent cross site scripting (XSS) exists in Invoices/Sales Orders/Items/Customers/Quotes input field. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. In NCH Express Accounts Accounting v7.02, persistent cross site scripting (XSS) exists in Invoices/Sales Orders/Items/Customers/Quotes input field. An authenticated unprivileged user can add/modify the Invoices/Sales Orders/Items/Customers/Quotes fields parameter to inject arbitrary JavaScript. Affected products include: Nchsoftware Express Accounts Accounting.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.