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
2026-09-25T08:21:37Z
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
2be88bd782d9fff46de8e56a99baca523e7917b3
Fixed
fe79a9713bef2bfd64bbfefd15704060764b1274
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "3.4.1"
        },
        {
            "fixed": "4.0.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

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 
"2026-09-25T08:21:37Z"