CVE-2026-107215

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Source
https://cve.org/CVERecord?id=CVE-2026-107215
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107215.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-107215
Aliases
  • GHSA-x2q3-8cjh-766f
Published
2026-10-07T17:48:03Z
Modified
2026-10-08T02:50:36Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoS
Details

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory entry streamSize for EncryptionInfo and EncryptedPackage allocations before validating the stream. When a crafted OLE compound file declares a negative or extremely large EncryptionInfo or EncryptedPackage stream size, the declared size reaches make with a negative length or forces a multi-gigabyte allocation, allowing an attacker to panic or exhaust process memory. No fixed version is available as of this review.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107215.json"
}
References

Affected packages

Git / github.com/qax-os/excelize

Affected ranges

Type
GIT
Repo
https://github.com/qax-os/excelize
Events
Introduced
89465f41b5a29ac2e1debe16b8cb6f59c344f917
Last Affected
90ff348959dd842cbf3a4fbd93a78afbe18db476
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "2.3.1"
        },
        {
            "last_affected": "2.11.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v2.*
v2.10.0
v2.10.1
v2.11.0
v2.3.1
v2.3.2
v2.4.0
v2.4.1
v2.5.0
v2.6.0
v2.6.1
v2.7.0
v2.7.1
v2.8.0
v2.8.1
v2.9.0
v2.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107215.json"