Visualware MyConnection Server doIForward XML External Entity Processing Information Disclosure Vulnerability

published 2024-05-03 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-46494

cvss: 6.5; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits: 0; none known

Visualware MyConnection Server doIForward XML External Entity Processing Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Visualware MyConnection Server. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the doIForward method. Due to the improper restriction of XML External Entity (XXE) references, a crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of root. Was ZDI-CAN-21774.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-06-05)

Exploit prediction

1.24% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected products

Visualware MyConnection Server
visualware myconnection_server

Classification

Weakness

CWE-611 Improper Restriction of XML External Entity Reference

References

myconnectionserver.visualware.com /support/security-advisories
vendor-advisory
zerodayinitiative.com /advisories/ZDI-23-1397/
third-party-advisory

Sources

CVE List CVE-2023-42035
NVD CVE-2023-42035

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Summary