Vulnerability in Qax-Os Excelize
CVE-2026-107214
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Qax-Os Excelize — versions >= 2.3.1, <= 2.11.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-107214?
- CVE-2026-107214 is a high-severity vulnerability in Qax-Os Excelize, classified under CWE-248. CVSS score: 7.5/10. Published 2026-10-07.
- How severe is CVE-2026-107214?
- High severity. CVSS v3 base score is 7.5 out of 10.