What is the CVSS score of CVE-2018-16521?

CVE-2018-16521 has a CVSS 3.0 base score of 9.8 (Critical). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.9%.

Is there a patch available for CVE-2018-16521?

Yes, a patch is available for CVE-2018-16521. Update the affected software to the latest version immediately.

Html Form Entry CVE-2018-16521

CRITICAL

Improper Restriction of XML External Entity Reference (CWE-611)

2018-09-05 cve@mitre.org

XXE Html Form Entry Reference Application

9.8

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Sep 05, 2018 - 15:29 nvd

CRITICAL 9.8

DescriptionNVD

An XML External Entity (XXE) vulnerability exists in HTML Form Entry 3.7.0, as distributed in OpenMRS Reference Application 2.8.0.

AnalysisAI

An XML External Entity (XXE) vulnerability exists in HTML Form Entry 3.7.0, as distributed in OpenMRS Reference Application 2.8.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Technical ContextAI

This vulnerability is classified as XML External Entity (XXE) (CWE-611), which allows attackers to read arbitrary files or perform SSRF through XML processing. An XML External Entity (XXE) vulnerability exists in HTML Form Entry 3.7.0, as distributed in OpenMRS Reference Application 2.8.0. Affected products include: Openmrs Html Form Entry, Openmrs Reference Application.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Disable external entity processing in XML parsers, use JSON instead of XML where possible.