CVE-2026-107218

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Source
https://cve.org/CVERecord?id=CVE-2026-107218
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107218.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-107218
Aliases
Published
2026-10-07T18:29:38Z
Modified
2026-10-08T10:45:23Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
Excelize: RIGHT() on supplementary-plane text slices with a negative index and panics
Details

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.10.1 to 2.11.0, RIGHT validates the requested length with UTF-16 code-unit counts but slices a rune array using Unicode code-point counts. RIGHT reaches leftRight through CalcCellValue, where countUTF16String validates one unit but utf8.RuneCountInString supplies the slice index in another. When RIGHT evaluates supplementary-plane text with a requested character count between the rune count and UTF-16 code-unit count, the inconsistent units produce a negative rune-slice index, allowing an attacker to panic during formula evaluation. No fixed version is available as of this review.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-129"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107218.json"
}
References

Affected packages

Git / github.com/qax-os/excelize

Affected ranges

Type
GIT
Repo
https://github.com/qax-os/excelize
Events
Introduced
5ad5ab3af0054c55bdce09f1530085600e9f2e45
Last Affected
90ff348959dd842cbf3a4fbd93a78afbe18db476
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "2.10.1"
        },
        {
            "last_affected": "2.11.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v2.*
v2.10.1
v2.11.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107218.json"