The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The 'podman quadlet install --replace' command opens the existing destination file with O_CREATE|O_WRONLY     but omits O_TRUNC. When the initial reflink copy attempt fails (common on non-reflink-capable filesystems     including many RHEL default XFS configurations), the fallback in ReflinkOrCopy uses io.Copy which performs     a non-truncating write. If the original Quadlet is larger than the new Quadlet, the file is not truncated     and content from the original is preserved. The command completes with no warning. There is no risk of     information leakage as the user already had access to the Quadlet in order to replace it, and in most     cases, this would only lead to invalid Quadlet files. However, security-related options from the end of     the old Quadlet could be included in the new Quadlet, and if the truncation resulted in a valid Quadlet     file, this could result in undesirable behavior. For example, running podman quadlet install --replace to     remove a single line from the end of a Quadlet - including security-sensitive content, like AddCapability
    - will fail, and the option will continue to be used. Further, with Volume Quadlets, this can include     additional mounts which can cause content to be unintentionally exposed into containers. If, later, the     image is updated then compromised content might be leaked to an attacker. The vulnerable code paths are in     pkg/domain/infra/abi/quadlet.go (lines 338-360, O_CREATE|O_WRONLY without O_TRUNC) and     vendor/go.podman.io/storage/pkg/fileutils/reflink_linux.go (lines 12-19, non-truncating io.Copy fallback).
    (CVE-2026-19730)

Note that Nessus relies on the presence of the package as reported by the vendor.

Detections

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Linux Distros Unpatched Vulnerability : CVE-2026-19730

medium Nessus Plugin ID 335233

Version 1.3

Version 1.2

Version 1.1

Version 1.3 Aug 31, 2026, 6:55 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202608310655
Version 1.2 Aug 19, 2026, 10:20 PM CVSS metrics ("CVSSv2 score" set to 5.8) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N") Detection (updated detection logic) Plugin metadata Plugin Feed: 202608192220
Version 1.1 Aug 14, 2026, 1:45 AM New Plugin Feed: 202608140145