CVE-2023-42344: Alkacon OpenCms allows remote unauthenticated attackers to obtain sensitive information

May 8, 2026 (updated May 14, 2026)

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.

References

github.com/advisories/GHSA-rcc6-6q2f-m2cw
github.com/projectdiscovery/nuclei-templates/issues/8864
labs.watchtowr.com/xxe-you-can-depend-on-me-opencms
nvd.nist.gov/vuln/detail/CVE-2023-42344

Code Behaviors & Features

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