CVE-2026-54778 | BDVDB-2026-346239 Detail
CoreWCFCoreWCF
Description#
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF UnixDomainSocket POSIX peer identity resolution uses non-reentrant getpwuid and getgrgid calls, allowing concurrent connections to attribute one connection's identity to another or crash the host process under contention. This issue is fixed in versions 1.8.1 and 1.9.1.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact high. Attack vector: local.
Weaknesses#
References#
- https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-q6v9-43v5-jv9q
- https://github.com/CoreWCF/CoreWCF/commit/a3d95ea4627b818995e92c7def4c016164cacfce
- https://github.com/CoreWCF/CoreWCF/commit/b0acb105589b455a095ea5ff49f5191e4eeff791
- https://github.com/CoreWCF/CoreWCF/commit/b4867547c94bb088568935d581a55dda18a621e1
- https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1
- https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.