GHSA-hqh4-hp5h-w6qj
GitHub Security Advisory
⚠ Unreviewed
HIGH
Has CVE
Advisory Details
The unserialize() function supported a type code, "S", which was meant to be supported only for APC serialization. This type code allowed arbitrary memory addresses to be accessed as if they were static StringData objects. This issue affected HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.
Related CVEs
Key Information
7.5
/10
Dataset
Last updated: July 3, 2025 6:26 AM
Data from GitHub Advisory Database. This information is provided for research and educational purposes.