CVE-2026-107219
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets.
Impact
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, agile decryption accepts an attacker-controlled spinCount and performs that many password-key derivation iterations before verifier validation. OpenFile reaches agileDecrypt, which passes the unbounded spinCount to convertPasswdToKey before password verification. When a crafted OLE encrypted-workbook header supplies an excessive spinCount and the file is opened, the key-derivation loop performs unbounded attacker-selected work and cannot be cancelled, allowing an attacker to consume a CPU core for an attacker-controlled duration. No fixed version is available as of this review.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/xuri/excelize/v2 | >= 2.3.1, < 2.11.1-0.20260906004932-2badfcd5841d | 2.11.1-0.20260906004932-2badfcd5841d |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Excelize | Excelize | from 2.3.1 through 2.11.0 |