PCP: PCP pmproxy: Unauthenticated access to /store endpoint allows bypassing pmcd access rules

An unauthenticated remote attacker can bypass access controls by sending crafted requests to the PCP pmproxy /store endpoint. This allows the attacker to overwrite any PMDA metric, leading to arbitrary code execution and system takeover...

TencentOS Server 4: pcp (TSSA-2026:0829)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0829 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities...

CVE-2026-16527

CVE-2026-16527 affects the PCP project’s pmproxy service. An unauthenticated attacker can bypass access controls via crafted requests to the /store endpoint, enabling overwriting of any PMDA metric and leading to arbitrary code execution and system takeover. Root cause: missing/ineffective access...

CVE-2026-16527 Pcp: pcp pmproxy: unauthenticated access to /store endpoint allows bypassing pmcd access rules

An unauthenticated remote attacker can bypass access controls by sending crafted requests to the PCP pmproxy /store endpoint. This allows the attacker to overwrite any PMDA metric, leading to arbitrary code execution and system takeover...