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Vulnerability · Published Oct 21, 2026 · Assigned by redhat

CVE-2026-85518Openscap: openscap: arbitrary file write via path traversal in source datastream decomposition

Medium 6.1

In plain English

A medium-severity path traversal in Red Hat Enterprise Linux 10 from Red Hat. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.4%top 61.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A flaw was found in OpenSCAP. When decomposing a Source DataStream (SDS) file, the application does not properly validate relative file path attributes, leading to a path traversal vulnerability. An attacker can exploit this flaw by tricking a user or automated system into decomposing a crafted datastream containing directory traversal sequences. Successful exploitation allows unauthorized file creation or modification outside the intended target directory with the permissions of the executing process.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12openscapno fix listedDEBIAN-CVE-2026-85518
Debian:13openscapno fix listedDEBIAN-CVE-2026-85518
Debian:14openscap1.4.6+dfsg-1DEBIAN-CVE-2026-85518

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Hardened Images see references
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

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

References