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CVE-2026-107224

Status: AnalyzedMedium (6.5)—

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.1.0 to 2.11.0, a Zip64 uncompressed size with the high bit set is converted from uint64 to a negative int64 before signed size-limit checks and allocation. ReadZipReader obtains UncompressedSize64 through FileInfo.Size and passes the wrapped negative value to readFile. When a crafted Zip64 entry declares an uncompressed size from 2^63 through 2^64-1 and the workbook is opened, the negative size bypasses unzip limits and reaches make as a negative capacity, allowing an attacker to panic during workbook opening. No fixed version is available as of this review.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Requiere interacción del usuario (UI:R) para abrir archivo preparado con Zip64 malformado. Causa pánico/DoS en aplicación sin código disponible. Vector CVSS: AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Filter Network TrafficApplication Isolation and SandboxingExploit ProtectionUpdate Software

Affected technologies (1)

Excelize — Excelize

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-107224",
  "cveTags": [],
  "metrics": {
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          "version": "2.0.3",
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    }
  ],
  "lastModified": "2026-10-13T14:17:32.220",
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