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Vulnerability · Published Jul 30, 2026 · Assigned by redhat

CVE-2026-16531Pcp: pcp: arbitrary file creation via path traversal in pmproxy logger servlet

Medium 5.3

In plain English

A medium-severity path traversal in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.5%top 56.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

An unauthenticated remote attacker can exploit a path traversal vulnerability in the PCP pmproxy logger servlet using a crafted hostname. This allows arbitrary file and directory creation, potentially leading to a denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12pcpno fix listedDEBIAN-CVE-2026-16531
Debian:13pcpno fix listedDEBIAN-CVE-2026-16531
Debian:14pcp7.2.0-1DEBIAN-CVE-2026-16531
Ubuntu:22.04:LTSpcpno fix listedUBUNTU-CVE-2026-16531
Ubuntu:24.04:LTSpcpno fix listedUBUNTU-CVE-2026-16531
Ubuntu:26.04:LTSpcpno fix listedUBUNTU-CVE-2026-16531
Ubuntu:26.10pcpno fix listedUBUNTU-CVE-2026-16531

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 5 see references

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References