CVEvulnerability
CVE-2026-107215
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-10-07
- Last modified
- 2026-10-13
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-789
Description
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory entry streamSize for EncryptionInfo and EncryptedPackage allocations before validating the stream. When a crafted OLE compound file declares a negative or extremely large EncryptionInfo or EncryptedPackage stream size, the declared size reaches make with a negative length or forces a multi-gigabyte allocation, allowing an attacker to panic or exhaust process memory. No fixed version is available as of this review.
Affected configurations
• excelize excelize (>= 2.3.1 <= 2.11.0)
Related
Weakness · CWE (1)
- CWE-789 Memory Allocation with Excessive Size Value weakness
References
- https://github.com/qax-os/excelize/commit/5f636f9dcde55911f14290060b017f0cc88cd694 Patch
- https://github.com/qax-os/excelize/pull/2396 Issue Tracking, Patch
- https://github.com/qax-os/excelize/security/advisories/GHSA-x2q3-8cjh-766f Exploit, Vendor Advisory
- https://github.com/qax-os/excelize/security/advisories/GHSA-x2q3-8cjh-766f Exploit, Vendor Advisory