qax-os Excelize up to 2.11.0 Decryption Dispatch Decrypt uncaught exception

Summaryinfo

A vulnerability classified as problematic was found in qax-os Excelize up to 2.11.0. Affected is the function Decrypt of the component Decryption Dispatch. The manipulation results in uncaught exception. This vulnerability was named CVE-2026-107214. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in qax-os Excelize up to 2.11.0. Affected is the function Decrypt of the component Decryption Dispatch. The manipulation with an unknown input leads to a uncaught exception vulnerability. CWE is classifying the issue as CWE-248. An exception is thrown from a function, but it is not caught. This is going to have an impact on availability. CVE summarizes:

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, the decryption dispatch performs insufficient structural and parameter validation before standard and agile decryptors slice, index, allocate, and divide using attacker-controlled values. Decrypt passes attacker-controlled EncryptionInfo and EncryptedPackage data into standardDecrypt or agileDecrypt before validating the structures used by those routines. When a malformed OLE compound file with a version-valid EncryptionInfo stream is opened or passed to Decrypt, nine malformed-input classes reach unrecovered Go runtime panics instead of the documented error path, allowing an attacker to terminate the calling process. No fixed version is available as of this review.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-107214 since 10/07/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• qax-os

Name

• Excelize

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11.0

Website

• Product: https://github.com/qax-os/excelize/

CPE 2.3info

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CPE 2.2info

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