{
  "cveId": "CVE-2026-88050",
  "url": "https://patchblox.com/security/cve/CVE-2026-88050",
  "summary": "CVE-2026-88050 is fixed in 19 products on 1 platform, first by libtesseract5 5.5.0-1ubuntu0.1~esm1, released September 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libtesseract4: Tesseract is an open source OCR engine",
  "description": "Tesseract is an open source OCR engine. In version 5.5.3 and earlier, RecodedCharID::DeSerialize in src/ccutil/unicharcompress.h validates length_ but accepts negative code_ values from a crafted .traineddata recoder component. UnicharCompress::ComputeCodeRange in src/ccutil/unicharcompress.cpp can consequently produce code_range_ equal to zero, after which SetupDecoder indexes is_valid_start_ with the negative code on a size-zero vector. The resulting out-of-bounds bit write uses a large wrapped index and reliably causes a wild-address crash or allocation failure on the default LSTM engine. No fixed release is available as of this review.",
  "published": "2026-09-10T10:17:00Z",
  "severity": "Medium",
  "epss": 0.0015,
  "epssPercentile": 0.04207,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libtesseract4",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.00~git2288-10f4998a-2ubuntu0.1~esm1",
      "fix": "libtesseract4 4.00~git2288-10f4998a-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libtesseract4-4.00-git2288-10f4998a-2ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:40Z"
    },
    {
      "platform": "linux",
      "product": "libtesseract4",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.1.1-2ubuntu0.1~esm1",
      "fix": "libtesseract4 4.1.1-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libtesseract4-4.1.1-2ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:46Z"
    },
    {
      "platform": "linux",
      "product": "libtesseract4",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.1.1-2.1ubuntu0.1~esm1",
      "fix": "libtesseract4 4.1.1-2.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libtesseract4-4.1.1-2.1ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:48Z"
    },
    {
      "platform": "linux",
      "product": "libtesseract5",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.3.4-1ubuntu0.1~esm1",
      "fix": "libtesseract5 5.3.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libtesseract5-5.3.4-1ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:51Z"
    },
    {
      "platform": "linux",
      "product": "libtesseract5",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.5.0-1ubuntu0.1~esm1",
      "fix": "libtesseract5 5.5.0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libtesseract5-5.5.0-1ubuntu0.1-esm1",
      "released": "2026-09-10T11:18:00Z"
    },
    {
      "platform": "linux",
      "product": "mingw32-tesseract",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "mingw32-tesseract-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "mingw32-tesseract-tools",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "mingw64-tesseract",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "mingw64-tesseract-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "mingw64-tesseract-tools",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-common",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-devel",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-libs",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-libs-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.00~git2288-10f4998a-2ubuntu0.1~esm1",
      "fix": "tesseract-ocr 4.00~git2288-10f4998a-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tesseract-ocr-4.00-git2288-10f4998a-2ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:40Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.1.1-2ubuntu0.1~esm1",
      "fix": "tesseract-ocr 4.1.1-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-tesseract-ocr-4.1.1-2ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:46Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.1.1-2.1ubuntu0.1~esm1",
      "fix": "tesseract-ocr 4.1.1-2.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-tesseract-ocr-4.1.1-2.1ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:48Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.3.4-1ubuntu0.1~esm1",
      "fix": "tesseract-ocr 5.3.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-tesseract-ocr-5.3.4-1ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:51Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.5.0-1ubuntu0.1~esm1",
      "fix": "tesseract-ocr 5.5.0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-tesseract-ocr-5.5.0-1ubuntu0.1-esm1",
      "released": "2026-09-10T11:18:00Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "5.5.3-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21957-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21957-1",
      "released": "2026-09-24T15:02:59Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr-all",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.00~git2288-10f4998a-2ubuntu0.1~esm1",
      "fix": "tesseract-ocr-all 4.00~git2288-10f4998a-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-tesseract-ocr-all-4.00-git2288-10f4998a-2ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:40Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr-all",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.1.1-2ubuntu0.1~esm1",
      "fix": "tesseract-ocr-all 4.1.1-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-tesseract-ocr-all-4.1.1-2ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:46Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr-all",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "4.1.1-2.1ubuntu0.1~esm1",
      "fix": "tesseract-ocr-all 4.1.1-2.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-tesseract-ocr-all-4.1.1-2.1ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:48Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr-all",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "5.3.4-1ubuntu0.1~esm1",
      "fix": "tesseract-ocr-all 5.3.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-tesseract-ocr-all-5.3.4-1ubuntu0.1-esm1",
      "released": "2026-10-07T22:10:51Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-ocr-all",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "5.5.0-1ubuntu0.1~esm1",
      "fix": "tesseract-ocr-all 5.5.0-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-tesseract-ocr-all-5.5.0-1ubuntu0.1-esm1",
      "released": "2026-09-10T11:18:00Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-tools",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    },
    {
      "platform": "linux",
      "product": "tesseract-tools-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "5.5.3-2.fc43",
      "fix": "FEDORA-2026-4585ABA520",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-4585aba520",
      "released": "2026-09-21T09:15:36Z"
    }
  ],
  "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"
  }
}