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Alkacon OpenCms CVE-2023-42344

| EUVDEUVD-2023-46797 HIGH
Improper Restriction of XML External Entity Reference (CWE-611)
2026-05-08 mitre GHSA-rcc6-6q2f-m2cw
7.3
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.3 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

3
Severity Changed
May 08, 2026 - 15:22 NVD
LOW HIGH
CVSS changed
May 08, 2026 - 15:22 NVD
-1.0 (LOW) 7.3 (HIGH)
CVE Published
May 08, 2026 - 00:00 cve.org
HIGH 7.3

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 28 maven packages depend on org.opencms:opencms-core (28 direct, 0 indirect)

Ecosystem-wide dependent count for version 10.5.1.

DescriptionCVE.org

Alkacon OpenCms before 10.5.1 allows remote unauthenticated attackers to obtain sensitive information via a cmis-online/query XXE attack on a Chemistry servlet.

AnalysisAI

Alkacon OpenCms before 10.5.1 allows remote unauthenticated attackers to obtain sensitive information via a cmis-online/query XXE attack on a Chemistry servlet. Rated high severity (CVSS 7.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

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. Alkacon OpenCms before 10.5.1 allows remote unauthenticated attackers to obtain sensitive information via a cmis-online/query XXE attack on a Chemistry servlet. Affected products include: N/A. Version information: before 10.5.1.

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.

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CVE-2023-42344 vulnerability details – vuln.today

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