What Is Under the Hood? A Cross-Ecosystem Study of Vulnerable Dependencies in Construction Software
Abstract: The construction industry increasingly relies on software built from third-party components, yet the dependency composition and known-vulnerability exposure of construction-related software remain poorly analyzed. In this study, we conduct an empirical, cross-ecosystem investigation of 904 construction-related GitHub repositories spanning six construction functions and a multifunction category. Using commit-pinned repository snapshots and OSV-Scanner, we examine dependency assessability, known-vulnerability prevalence, severity, weakness classifications, and shared upstream exposure. Our results reveal that only 494 repositories (54.6%) completed vulnerability assessment, revealing substantial gaps in dependency visibility. Among successfully scanned repositories, 395 (80.0%) contained at least one dependency version associated with a published vulnerability advisory, and 97.2% of affected repositories contained a High or Critical severity risk. Additionally, Common Weakness Enumeration (CWE) mapping identified recurring resource-consumption, path-traversal, information-exposure, and code-injection weaknesses. Vulnerability burden was uneven, with a median of 50 distinct advisory clusters per affected repository, while just two affected upstream package families collectively reached ~70% of affected repositories. These findings establish an empirical baseline for dependency assessability and known-vulnerability exposure in construction-related open-source software. Our findings underscore the importance of documenting assessment coverage, interpreting advisory matches in their deployment context, and examining shared upstream dependencies when evaluating construction software supply-chain security.