{
  "cveId": "CVE-2026-33948",
  "url": "https://patchblox.com/security/cve/CVE-2026-33948",
  "summary": "CVE-2026-33948 is fixed in 5 products on 1 platform, first by jq 1.5\u002Bdfsg-2ubuntu0.1~esm2, released April 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "jq: Embedded-NUL Truncation in CLI JSON Input Path Causes Prefix-Only Validation of Malformed Input",
  "description": "jq is a command-line JSON processor. Commits before 6374ae0bcdfe33a18eb0ae6db28493b1f34a0a5b contain a vulnerability where CLI input parsing allows validation bypass via embedded NUL bytes. When reading JSON from files or stdin, jq uses strlen() to determine buffer length instead of the actual byte count from fgets(), causing it to truncate input at the first NUL byte and parse only the preceding prefix. This enables an attacker to craft input with a benign JSON prefix before a NUL byte followed by malicious trailing data, where jq validates only the prefix as valid JSON while silently discarding the suffix. Workflows relying on jq to validate untrusted JSON before forwarding it to downstream consumers are susceptible to parser differential attacks, as those consumers may process the full input including the malicious trailing bytes. This issue has been patched by commit 6374ae0bcdfe33a18eb0ae6db28493b1f34a0a5b.",
  "published": "2026-04-13T17:16:00Z",
  "severity": "Low",
  "cvss": 5.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
  "cwe": "Improper Null Termination",
  "epss": 0.00256,
  "epssPercentile": 0.17302,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33948",
  "fixes": [
    {
      "platform": "linux",
      "product": "jq",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1.6-2.1\u002Bdeb12u2",
      "fix": "DEBIAN-CVE-2026-33948",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33948",
      "released": "2026-04-14T00:16:06Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.7.1-6\u002Bdeb13u2",
      "fix": "DEBIAN-CVE-2026-33948",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33948",
      "released": "2026-04-14T00:16:06Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "Debian 14",
      "fixedVersion": "1.8.1-5",
      "fix": "DEBIAN-CVE-2026-33948",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33948",
      "released": "2026-04-14T00:16:06Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.5\u002Bdfsg-2ubuntu0.1~esm2",
      "fix": "jq 1.5\u002Bdfsg-2ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-jq-1.5-dfsg-2ubuntu0.1-esm2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.6-1ubuntu0.20.04.1\u002Besm2",
      "fix": "jq 1.6-1ubuntu0.20.04.1\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-jq-1.6-1ubuntu0.20.04.1-esm2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.6-2.1ubuntu3.2",
      "fix": "jq 1.6-2.1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-jq-1.6-2.1ubuntu3.2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.7.1-3ubuntu0.24.04.2",
      "fix": "jq 1.7.1-3ubuntu0.24.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-jq-1.7.1-3ubuntu0.24.04.2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1.8.1-3ubuntu1.1",
      "fix": "jq 1.8.1-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-jq-1.8.1-3ubuntu1.1",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.8.1-4ubuntu2",
      "fix": "jq 1.8.1-4ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-jq-1.8.1-4ubuntu2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "amzn 2023",
      "fixedVersion": "1.8.1-59.amzn2023",
      "fix": "ALAS2023-2026-1815",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1815",
      "released": "2026-06-08T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.7.1-160000.3.1",
      "fix": "OPENSUSE-SU-2026:21248-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21248-1",
      "released": "2026-07-07T12:32:56Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "sles 15.6",
      "fixedVersion": "1.7.1-150000.3.25.1",
      "fix": "SUSE-SU-2026:4275-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4275-1",
      "released": "2026-09-21T07:33:03Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "sles 15.7",
      "fixedVersion": "1.7.1-150000.3.25.1",
      "fix": "SUSE-SU-2026:4275-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4275-1",
      "released": "2026-09-21T07:33:03Z"
    },
    {
      "platform": "linux",
      "product": "jq",
      "release": "sles 16.0",
      "fixedVersion": "1.7.1-160000.3.1",
      "fix": "SUSE-SU-2026:22566-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22566-1",
      "released": "2026-07-07T12:32:43Z"
    },
    {
      "platform": "linux",
      "product": "jq-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.8.1-59.amzn2023",
      "fix": "ALAS2023-2026-1815",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1815",
      "released": "2026-06-08T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "jq-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1.8.1-59.amzn2023",
      "fix": "ALAS2023-2026-1815",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1815",
      "released": "2026-06-08T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "jq-devel",
      "release": "amzn 2023",
      "fixedVersion": "1.8.1-59.amzn2023",
      "fix": "ALAS2023-2026-1815",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1815",
      "released": "2026-06-08T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libjq1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.5\u002Bdfsg-2ubuntu0.1~esm2",
      "fix": "libjq1 1.5\u002Bdfsg-2ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libjq1-1.5-dfsg-2ubuntu0.1-esm2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libjq1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.6-1ubuntu0.20.04.1\u002Besm2",
      "fix": "libjq1 1.6-1ubuntu0.20.04.1\u002Besm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libjq1-1.6-1ubuntu0.20.04.1-esm2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libjq1",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.6-2.1ubuntu3.2",
      "fix": "libjq1 1.6-2.1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libjq1-1.6-2.1ubuntu3.2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libjq1",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.7.1-3ubuntu0.24.04.2",
      "fix": "libjq1 1.7.1-3ubuntu0.24.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libjq1-1.7.1-3ubuntu0.24.04.2",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libjq1",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "1.8.1-3ubuntu1.1",
      "fix": "libjq1 1.8.1-3ubuntu1.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libjq1-1.8.1-3ubuntu1.1",
      "released": "2026-04-13T17:16:00Z"
    },
    {
      "platform": "linux",
      "product": "libjq1",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1.8.1-4ubuntu2",
      "fix": "libjq1 1.8.1-4ubuntu2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libjq1-1.8.1-4ubuntu2",
      "released": "2026-04-13T17:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}