{"id":"CVE-2026-16530","title":"Pcp: pcp: remote denial of service and information leakage","summary":"A flaw was found in the PCP (Performance Co-Pilot) `pmproxy` service. A remote attacker can exploit a vulnerability in the `pmLogLoadInDom()` function by sending a specially crafted request. This bypasses a critical bounds check, which c…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","cvssSource":"cna","cwe":["CWE-125"],"vendor":"Red Hat","product":"pcp","affected":["pcp (all versions)","pcp","pcp","pcp (all versions)","pcp (all versions)","openshift/ose-rhel-coreos-9 (all versions)","openshift/ose-rhel-coreos-9 (all versions)"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-07-30T13:37:26.587647Z"},"published":"2026-07-30","updated":"2026-11-05","sourceUpdated":"2026-11-05T19:23:59.346Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-16530","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-16530"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2506033","label":"RHBZ#2506033"}],"tags":["cve.org"],"epss":0.00485,"epssPercentile":0.41928,"ingestedAt":"2026-11-05T22:38:31.534Z","slug":"CVE-2026-16530","body":"## Overview\n\nA flaw was found in the PCP (Performance Co-Pilot) `pmproxy` service. A remote attacker can exploit a vulnerability in the `pmLogLoadInDom()` function by sending a specially crafted request. This bypasses a critical bounds check, which can lead to the `pmproxy` service crashing, causing a Denial of Service (DoS). Additionally, this flaw may enable the leakage of sensitive information from the system's memory.\n\n## Affected\n\n- `pcp (all versions)`\n- `pcp`\n- `pcp`\n- `pcp (all versions)`\n- `pcp (all versions)`\n- `openshift/ose-rhel-coreos-9 (all versions)`\n- `openshift/ose-rhel-coreos-9 (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nTo mitigate this issue, restrict network access to the `pmproxy` service on TCP port 44322 using firewall rules. Alternatively, if the `pmproxy` service is not required, it can be disabled to prevent exploitation.\n\nExample to disable `pmproxy`:\n`sudo systemctl stop pmproxy`\n`sudo systemctl disable pmproxy`\n\nNote that disabling `pmproxy` may impact functionality that relies on it. A service reload or restart may be required for changes to take effect.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}