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    4 vulnerabilities by GreycLab

    CVE-2026-42146 (GCVE-0-2026-42146)

    Vulnerability from nvd – Published: 2026-05-04 17:53 – Updated: 2026-05-06 13:44
    VLAI
    Title
    CImg Library: Uncontrolled memory allocation via nb_colors field in _load_bmp
    Summary
    CImg Library is a C++ library for image processing. Prior to commit c3aacf5, the nb_colors field read from the BMP file header is used directly to compute an allocation size without validating it against the remaining file size. A crafted BMP file with a large nb_colors value triggers an out-of-memory condition, crashing any application that uses CImg to load untrusted BMP files. This issue has been patched via commit c3aacf5.
    Severity
    5.5 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-789 - Memory Allocation with Excessive Size Value
    Assigner
    References
    Impacted products
    Vendor Product Version
    GreycLab CImg Affected: < c3aacf5b96ac1e54b7af1957c6737dbf3949f6d3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-42144 (GCVE-0-2026-42144)

    Vulnerability from nvd – Published: 2026-05-04 17:51 – Updated: 2026-05-05 14:14
    VLAI
    Title
    CImg Library: Integer overflow in PNM size check bypasses memory guard (_load_pnm)
    Summary
    CImg Library is a C++ library for image processing. Prior to commit 4ca26bc, there is an integer overflow vulnerability in the W*H*D size computation inside _load_pnm() that can bypass the memory allocation guard. A crafted PNM/PGM/PPM file with large dimension values causes the overflow to wrap around, allocating an undersized buffer and potentially triggering a heap buffer overflow. Any application using CImg to load untrusted image files is affected. This issue has been patched via commit 4ca26bc.
    Severity
    6.1 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-190 - Integer Overflow or Wraparound
    Assigner
    References
    Impacted products
    Vendor Product Version
    GreycLab CImg Affected: < 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-42146 (GCVE-0-2026-42146)

    Vulnerability from cvelistv5 – Published: 2026-05-04 17:53 – Updated: 2026-05-06 13:44
    VLAI
    Title
    CImg Library: Uncontrolled memory allocation via nb_colors field in _load_bmp
    Summary
    CImg Library is a C++ library for image processing. Prior to commit c3aacf5, the nb_colors field read from the BMP file header is used directly to compute an allocation size without validating it against the remaining file size. A crafted BMP file with a large nb_colors value triggers an out-of-memory condition, crashing any application that uses CImg to load untrusted BMP files. This issue has been patched via commit c3aacf5.
    Severity
    5.5 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-789 - Memory Allocation with Excessive Size Value
    Assigner
    References
    Impacted products
    Vendor Product Version
    GreycLab CImg Affected: < c3aacf5b96ac1e54b7af1957c6737dbf3949f6d3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-42144 (GCVE-0-2026-42144)

    Vulnerability from cvelistv5 – Published: 2026-05-04 17:51 – Updated: 2026-05-05 14:14
    VLAI
    Title
    CImg Library: Integer overflow in PNM size check bypasses memory guard (_load_pnm)
    Summary
    CImg Library is a C++ library for image processing. Prior to commit 4ca26bc, there is an integer overflow vulnerability in the W*H*D size computation inside _load_pnm() that can bypass the memory allocation guard. A crafted PNM/PGM/PPM file with large dimension values causes the overflow to wrap around, allocating an undersized buffer and potentially triggering a heap buffer overflow. Any application using CImg to load untrusted image files is affected. This issue has been patched via commit 4ca26bc.
    Severity
    6.1 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-190 - Integer Overflow or Wraparound
    Assigner
    References
    Impacted products
    Vendor Product Version
    GreycLab CImg Affected: < 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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        },
        {
          "name": "https://github.com/GreycLab/CImg/releases/tag/v.3.7.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/GreycLab/CImg/releases/tag/v.3.7.5"
        }
      ],
      "source": {
        "advisory": "GHSA-4663-63fm-44gc",
        "discovery": "UNKNOWN"
      },
      "title": "CImg Library: Integer overflow in PNM size check bypasses memory guard (_load_pnm)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42144",
    "datePublished": "2026-05-04T17:51:38.144Z",
    "dateReserved": "2026-04-24T17:15:21.834Z",
    "dateUpdated": "2026-05-05T14:14:38.921Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}