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    4 vulnerabilities by tesseract-ocr

    CVE-2026-73067 (GCVE-0-2026-73067)

    Vulnerability from nvd – Published: 2026-08-11 14:51 – Updated: 2026-08-11 15:03
    VLAI
    Title
    Tesseract: Heap OOB read in the DAWG loader
    Summary
    Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata model loaded through TessBaseAPI::Init can cause SquishedDawg::read_squished_dawg in src/dict/dawg.cpp to accept an unterminated forward-edge run, after which SquishedDawg::Load calls num_forward_edges(0) and last_edge in src/dict/dawg.h reads beyond edges_, causing a heap out-of-bounds read and process crash before image processing. This issue is fixed in version 5.5.3.
    Severity
    6.7 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:03 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    tesseract-ocr tesseract Affected: < 5.5.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-73066 (GCVE-0-2026-73066)

    Vulnerability from nvd – Published: 2026-08-11 14:49 – Updated: 2026-08-11 15:36
    VLAI
    Title
    Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata
    Summary
    Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata LSTM model component loaded through Tesseract's deserializer can cause an unchecked signed integer multiplication in Convolve::DeSerialize in src/lstm/convolve.cpp to wrap the convolution output-channel count, undersizing the forward-pass output buffer while writes use the unwrapped element count and causing a heap out-of-bounds write during OCR recognition. This issue is fixed in version 5.5.3.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:31 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    tesseract-ocr tesseract Affected: < 5.5.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-73067 (GCVE-0-2026-73067)

    Vulnerability from cvelistv5 – Published: 2026-08-11 14:51 – Updated: 2026-08-11 15:03
    VLAI
    Title
    Tesseract: Heap OOB read in the DAWG loader
    Summary
    Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata model loaded through TessBaseAPI::Init can cause SquishedDawg::read_squished_dawg in src/dict/dawg.cpp to accept an unterminated forward-edge run, after which SquishedDawg::Load calls num_forward_edges(0) and last_edge in src/dict/dawg.h reads beyond edges_, causing a heap out-of-bounds read and process crash before image processing. This issue is fixed in version 5.5.3.
    Severity
    6.7 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:03 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    tesseract-ocr tesseract Affected: < 5.5.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-73066 (GCVE-0-2026-73066)

    Vulnerability from cvelistv5 – Published: 2026-08-11 14:49 – Updated: 2026-08-11 15:36
    VLAI
    Title
    Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata
    Summary
    Tesseract is an open source OCR engine. Prior to 5.5.3, a crafted .traineddata LSTM model component loaded through Tesseract's deserializer can cause an unchecked signed integer multiplication in Convolve::DeSerialize in src/lstm/convolve.cpp to wrap the convolution output-channel count, undersizing the forward-pass output buffer while writes use the unwrapped element count and causing a heap out-of-bounds write during OCR recognition. This issue is fixed in version 5.5.3.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 15:31 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    tesseract-ocr tesseract Affected: < 5.5.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-11T14:49:16.817Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/security/advisories/GHSA-7j76-5rq5-5jg8"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/pull/4588",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/pull/4588"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/commit/2f4d2f4bf45c363785d7bf1da29b6628f8939a72"
        },
        {
          "name": "https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tesseract-ocr/tesseract/releases/tag/5.5.3"
        }
      ],
      "source": {
        "advisory": "GHSA-7j76-5rq5-5jg8",
        "discovery": "UNKNOWN"
      },
      "title": "Tesseract: Heap out-of-bounds write in LSTM Convolve layer via crafted .traineddata"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-73066",
    "datePublished": "2026-08-11T14:49:16.817Z",
    "dateReserved": "2026-08-10T19:37:41.443Z",
    "dateUpdated": "2026-08-11T15:36:09.326Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}