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    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
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      "contact_details": "https://tuxcare.com/contact/",
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        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian11els/vex/2026/cve-2026-53788-els_os-debian11els.json"
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      "current_release_date": "2026-09-18T13:36:39Z",
      "generator": {
        "date": "2026-09-18T13:36:39Z",
        "engine": {
          "name": "pyCSAF"
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      "id": "CVE-2026-53788-ELS_OS-DEBIAN11ELS",
      "initial_release_date": "2026-08-13T15:19:00Z",
      "revision_history": [
        {
          "date": "2026-08-13T15:19:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-09-17T12:45:34Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2026-09-18T13:36:39Z",
          "number": "3",
          "summary": "Update document"
        }
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      "status": "final",
      "version": "3"
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    "title": "Security update on CVE-2026-53788"
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      "cve": "CVE-2026-53788",
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        "id": "CWE-93",
        "name": "Improper Neutralization of CRLF Sequences ('CRLF Injection')"
      },
      "notes": [
        {
          "category": "description",
          "text": "rsync before 3.5.0 contains a newline injection vulnerability in the name-converter uid/gid mapping interface that allows local attackers to forge protocol messages by creating user or group names containing newline characters. Attackers can inject malicious newline characters into names communicated over the pipe-based line-oriented protocol to cause the rsync daemon to process attacker-influenced data as legitimate protocol input, corrupting uid/gid mapping logic.",
          "title": "Vulnerability description"
        }
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        {
          "category": "self",
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          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-53788"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/releases/tag/v3.5.0",
          "url": "https://github.com/RsyncProject/rsync/releases/tag/v3.5.0"
        },
        {
          "category": "external",
          "summary": "https://github.com/RsyncProject/rsync/security/advisories/GHSA-p4c5-8c68-5fjq",
          "url": "https://github.com/RsyncProject/rsync/security/advisories/GHSA-p4c5-8c68-5fjq"
        },
        {
          "category": "external",
          "summary": "https://www.vulncheck.com/advisories/rsync-newline-injection-via-name-converter-uid-gid-mapping",
          "url": "https://www.vulncheck.com/advisories/rsync-newline-injection-via-name-converter-uid-gid-mapping"
        }
      ],
      "release_date": "2026-08-13T15:19:00Z",
      "remediations": [
        {
          "category": "no_fix_planned",
          "date": "2026-09-09T12:17:08.831976Z",
          "details": "This flaw is only reachable on rsync daemons that explicitly enable the optional “name converter” UID/GID mapping helper; in default setups (and in chrooted modules), that helper is not used and numeric-IDs are applied instead, so the vulnerable line‑protocol path is inactive. Even when present, the issue only permits injection into the converter’s pipe to corrupt name-to-ID mapping (no code execution, no scope change, and no availability impact). Environments running rsync as a client over SSH or daemons without a configured name converter are not exposed, making this CVE a low‑priority item.",
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}