CVE-2026-16527

Pcp: pcp pmproxy: unauthenticated access to /store endpoint allows bypassing pmcd access rules

HIGH 7.3

At a glance

Source: NVD
EPSS: EPSS 0.59 % · percentile 48 (2026-10-28)
State: PUBLISHED
Published: 2026-07-30 05:30 UTC
Updated: 2026-10-01 23:22 UTC
Assigner: redhat
NVD status: Awaiting Analysis

Description

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.

Weaknesses (CWE)

CWE-306 — Missing Authentication for Critical Functionality
CWE-284 — Improper Access Control

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	redhat
CVSS 3.1	HIGH 7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	NVD · secalert@redhat.com (Secondary)

European references

ENISA EUVD · EUVD-2026-50976
GCVE · GCVE-0-2026-16527

CERT-FR advisories

CERTFR-2026-AVI-1256 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Affected products

Product	Versions
Red Hat · Red Hat Enterprise Linux 10	unaffected 0:7.0.3-5.el10_2 < *
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support	unaffected 0:6.3.7-1.el10_0.1 < *
Red Hat · Red Hat Enterprise Linux 8	unaffected 0:5.3.7-22.el8_10.5 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	unaffected 0:5.2.5-8.el8_4.1 < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	unaffected 0:5.2.5-8.el8_4.1 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	unaffected 0:5.3.5-10.el8_6.1 < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	unaffected 0:5.3.5-10.el8_6.1 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Service	unaffected 0:5.3.7-19.el8_8.1 < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	unaffected 0:5.3.7-19.el8_8.1 < *
Red Hat · Red Hat Enterprise Linux 9	unaffected 0:6.3.7-8.el9_8.4 < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	unaffected 0:6.0.1-8.el9_2.2 < *
Red Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	unaffected 0:6.2.0-5.el9_4.2 < *
Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Support	unaffected 0:6.3.7-1.el9_6.1 < *
Red Hat · Red Hat Enterprise Linux 6
Red Hat · Red Hat Enterprise Linux 7
Red Hat · Red Hat OpenShift Container Platform 4

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD