Medium [CVE-2026-88014] Arbitrary file write via Zip Slip vulnerability
This medium-severity Red Hat Linux advisory covers CVE-2026-88014 affecting Cryostat 4, Red Hat Advanced Cluster Management for Kubernetes 2.
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Summary
A flaw was found in rclone. This vulnerability, known as Zip Slip, allows a remote attacker to write arbitrary files outside of the intended destination when processing a specially crafted ZIP archive.
By manipulating archive entry names, an attacker can bypass path sanitization, leading to potential system compromise or data integrity issues on affected systems.
Exploitation requires the victim to run rclone copy, sync, or mount against an attacker-supplied ZIP archive, and the resulting write is bounded by whatever confinement the destination backend enforces independently of rclone.
Red Hat's CVSS score (5.9, CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N) rates Privileges Required as Low rather than None (upstream/CVEOrg, 6.3); all other metrics and the Moderate severity match. The PR:L reflects that the archive must already be locally reachable by that rclone invocation, rather than delivered as a remote network step.
Weakness: CWE-22. Affected Red Hat products: Cryostat 4; Red Hat Advanced Cluster Management for Kubernetes 2.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- No viable mitigation exists for this flaw.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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