High [CVE-2026-88045] Memory exhaustion leading to Denial of Service
This high-severity Red Hat Linux advisory covers CVE-2026-88045.
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Summary
A flaw was found in rclone. A remote attacker can exploit a memory exhaustion vulnerability in the S3 streamed multipart path.
By manipulating the `Content-Length` or `X-Amz-Decoded-Content-Length` headers, an attacker can cause the application to reserve excessive memory without sending the declared body. This can lead to the exhaustion of process or host memory, resulting in a Denial of Service (DoS).
Red Hat has determined that the Red Hat products evaluated for this vulnerability are not affected. They ship rclone versions earlier than 1.75.0, while the affected release is rclone 1.75.0.
Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770.
Red Hat lists Cryostat 4; Red Hat Advanced Cluster Management for Kubernetes 2 as not affected.
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 mitigation is required for the Red Hat products evaluated because they do not ship the affected rclone version. Users running rclone independently should upgrade to version 1.75.1 or later.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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