{
  "cveId": "CVE-2026-29518",
  "url": "https://patchblox.com/security/cve/CVE-2026-29518",
  "summary": "CVE-2026-29518 is fixed in 5 products on 1 platform, first by rsync 3.1.2-2.1ubuntu1.6\u002Besm3, released May 19, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Rsync \u003C 3.4.3 TOCTOU Race Condition Allows Symlink-Based Arbitrary File Write",
  "description": "Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false.",
  "published": "2026-05-19T17:00:00Z",
  "severity": "Important",
  "cvss": 8.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cwe": "Time-of-check Time-of-use (TOCTOU) Race Condition",
  "epss": 0.00152,
  "epssPercentile": 0.04363,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-29518",
  "fixes": [
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "3.2.7-1\u002Bdeb12u5",
      "fix": "DEBIAN-CVE-2026-29518",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-29518",
      "released": "2026-05-27T17:38:13Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.4.1\u002Bds1-5\u002Bdeb13u3",
      "fix": "DEBIAN-CVE-2026-29518",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-29518",
      "released": "2026-05-27T17:38:13Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Debian 14",
      "fixedVersion": "3.4.3\u002Bds1-1",
      "fix": "DEBIAN-CVE-2026-29518",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-29518",
      "released": "2026-05-27T17:38:13Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "RHEL 10",
      "fixedVersion": "3.4.4-1.el10_2",
      "fix": "RHSA-2026:26332",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-26332",
      "released": "2026-05-20T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "RHEL 8",
      "fixedVersion": "0:3.1.3-27.el8_10",
      "fix": "RHSA-2026:26408",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-26408",
      "released": "2026-06-24T14:07:58Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "RHEL 9",
      "fixedVersion": "0:3.2.5-7.el9_8.2",
      "fix": "RHSA-2026:26410",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-26410",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.1.2-2.1ubuntu1.6\u002Besm3",
      "fix": "rsync 3.1.2-2.1ubuntu1.6\u002Besm3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-rsync-3.1.2-2.1ubuntu1.6-esm3",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.1.3-8ubuntu0.9\u002Besm1",
      "fix": "rsync 3.1.3-8ubuntu0.9\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-rsync-3.1.3-8ubuntu0.9-esm1",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.2.7-0ubuntu0.22.04.6",
      "fix": "rsync 3.2.7-0ubuntu0.22.04.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-rsync-3.2.7-0ubuntu0.22.04.6",
      "released": "2026-05-27T17:38:24Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "3.2.7-1ubuntu1.4",
      "fix": "rsync 3.2.7-1ubuntu1.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-rsync-3.2.7-1ubuntu1.4",
      "released": "2026-05-27T17:38:28Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.4.1\u002Bds1-5ubuntu1.2",
      "fix": "rsync 3.4.1\u002Bds1-5ubuntu1.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-rsync-3.4.1-ds1-5ubuntu1.2",
      "released": "2026-05-27T17:38:31Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.4.1\u002Bds1-7ubuntu0.2",
      "fix": "rsync 3.4.1\u002Bds1-7ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-rsync-3.4.1-ds1-7ubuntu0.2",
      "released": "2026-05-19T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "almalinux 10",
      "fixedVersion": "3.4.4-1.el10_2",
      "fix": "ALSA-2026:26332",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-26332",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "almalinux 8",
      "fixedVersion": "3.1.3-27.el8_10",
      "fix": "ALSA-2026:26408",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-26408",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "almalinux 9",
      "fixedVersion": "3.2.5-7.el9_8.2",
      "fix": "ALSA-2026:26410",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-26410",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "amzn 2023",
      "fixedVersion": "3.5.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3131",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3131",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "ol 10",
      "fixedVersion": "0:3.4.4-1.el10_2",
      "fix": "ELSA-2026-26332",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-26332",
      "released": "2026-07-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "ol 8",
      "fixedVersion": "0:3.1.3-27.el8_10",
      "fix": "ELSA-2026-26408",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-26408",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "ol 9",
      "fixedVersion": "0:3.2.5-7.el9_8.2",
      "fix": "ELSA-2026-26410",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-26410",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "rocky 10",
      "fixedVersion": "0:3.4.4-1.el10_2",
      "fix": "RLSA-2026:26332",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-26332",
      "released": "2026-06-19T06:04:41Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "rocky 8",
      "fixedVersion": "0:3.1.3-27.el8_10",
      "fix": "RLSA-2026:26408",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-26408",
      "released": "2026-06-17T06:00:15Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "rocky 9",
      "fixedVersion": "0:3.2.5-7.el9_8.2",
      "fix": "RLSA-2026:26410",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-26410",
      "released": "2026-06-17T12:03:08Z"
    },
    {
      "platform": "linux",
      "product": "rsync",
      "release": "sles 16.0",
      "fixedVersion": "3.4.1-160000.4.1",
      "fix": "SUSE-SU-2026:22015-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22015-1",
      "released": "2026-06-02T09:14:50Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "RHEL 8",
      "fixedVersion": "0:3.1.3-27.el8_10",
      "fix": "RHSA-2026:26408",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-26408",
      "released": "2026-06-24T14:07:58Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "RHEL 9",
      "fixedVersion": "0:3.2.5-7.el9_8.2",
      "fix": "RHSA-2026:26410",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-26410",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "almalinux 10",
      "fixedVersion": "3.4.4-1.el10_2",
      "fix": "ALSA-2026:26332",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-26332",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "almalinux 8",
      "fixedVersion": "3.1.3-27.el8_10",
      "fix": "ALSA-2026:26408",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-26408",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "almalinux 9",
      "fixedVersion": "3.2.5-7.el9_8.2",
      "fix": "ALSA-2026:26410",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-26410",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "amzn 2023",
      "fixedVersion": "3.5.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3131",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3131",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "ol 10",
      "fixedVersion": "0:3.4.4-1.el10_2",
      "fix": "ELSA-2026-26332",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-26332",
      "released": "2026-07-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "ol 8",
      "fixedVersion": "0:3.1.3-27.el8_10",
      "fix": "ELSA-2026-26408",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-26408",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-daemon",
      "release": "ol 9",
      "fixedVersion": "0:3.2.5-7.el9_8.2",
      "fix": "ELSA-2026-26410",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-26410",
      "released": "2026-06-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "3.5.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3131",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3131",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "3.5.1-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-3131",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3131",
      "released": "2026-09-28T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-rrsync",
      "release": "RHEL 9",
      "fixedVersion": "0:3.2.5-7.el9_8.2",
      "fix": "RHSA-2026:26410",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-26410",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "rsync-rrsync",
      "release": "almalinux 10",
      "fixedVersion": "3.4.4-1.el10_2",
      "fix": "ALSA-2026:26332",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-26332",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-rrsync",
      "release": "almalinux 9",
      "fixedVersion": "3.2.5-7.el9_8.2",
      "fix": "ALSA-2026:26410",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-26410",
      "released": "2026-06-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-rrsync",
      "release": "ol 10",
      "fixedVersion": "0:3.4.4-1.el10_2",
      "fix": "ELSA-2026-26332",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-26332",
      "released": "2026-07-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "rsync-rrsync",
      "release": "ol 9",
      "fixedVersion": "0:3.2.5-7.el9_8.2",
      "fix": "ELSA-2026-26410",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-26410",
      "released": "2026-06-23T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}