CVE-2026-16527 (GCVE-0-2026-16527)

Vulnerability from cvelistv5 – Published: 2026-07-30 05:30 – Updated: 2026-08-21 12:03
VLAI
Title
Pcp: pcp pmproxy: unauthenticated access to /store endpoint allows bypassing pmcd access rules
Summary
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.
Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 22:41 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-284 - Improper Access Control
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:55560 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:55617 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:55740 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-16527 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2506031 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:7.0.3-5.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:5.3.7-22.el8_10.5 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:6.3.7-8.el9_8.4 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Date Public
2026-07-30 00:00
Show details on NVD website
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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