Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets.
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
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Microsoft
- Product
- Microsoft 365 / Office
- CVSS
- 5.3
- Exposure class
- Collaboration
Why it ranks 14 (Routine)
- CVSS 5.3 medium
- Product class: collaboration
- Widely deployed vendor product (Microsoft)
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-107218 on this site · NVD · CVE.org · Vulnpedia
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