CVE-2026-48977

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Source
https://cve.org/CVERecord?id=CVE-2026-48977
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48977.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48977
Aliases
  • GHSA-mxg2-48g7-fmwc
Downstream
Related
Published
2026-09-17T20:26:21Z
Modified
2026-10-28T11:16:27Z
Severity
  • 7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
OpenSlide: Arbitrary memory write with crafted Ventana BIF file
Details

OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive row or column tile counts from a crafted Ventana BIF file. The invalid counts produce attacker-controlled relative memory offsets and allow arbitrary values to be written at those offsets, affecting all supported platforms and configurations and resulting in a crash or potential arbitrary code execution. This issue is fixed in version 4.0.1.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-123",
        "CWE-1284",
        "CWE-823"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48977.json"
}
References

Affected packages

Git / github.com/openslide/openslide

Affected ranges

Type
GIT
Repo
https://github.com/openslide/openslide
Events
Introduced
4cd4b83c3ffff0382126d0618c85407f2c469b28
Fixed
fe79a9713bef2bfd64bbfefd15704060764b1274
Fixed
2be88bd782d9fff46de8e56a99baca523e7917b3
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "3.4.1"
                },
                {
                    "fixed":  "4.0.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "2be88bd782d9fff46de8e56a99baca523e7917b3"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v4.0.1",
            "range":  [
                {
                    "fixed":  "fe79a9713bef2bfd64bbfefd15704060764b1274"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v3.*
v3.4.1
v4.*
v4.0.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48977.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "37663368902248290890830212999759190478",
                "222598150985970413257920523793620553364",
                "110187170279966970021237591102720013962",
                "18557327014411702082152728286544279105"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-48977-1a9553c4",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3",
        "target":  {
            "file":  "src/openslide-vendor-ventana.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "224579525781094751088489470525506148291",
            "length":  4959
        },
        "id":  "CVE-2026-48977-9f2e09a0",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3",
        "target":  {
            "file":  "src/openslide-vendor-ventana.c",
            "function":  "parse_level0_xml"
        }
    }
]
vanir_signatures_modified 
"2026-10-28T11:16:27Z"