What is CVE-2026-54063?

CVE-2026-54063 is a high-severity vulnerability in Qax-os Excelize, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-07-10.

How severe is CVE-2026-54063?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Qax-os Excelize

CVE-2026-54063

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. Prior to 2.11.0, the checkSheet() function in github.com/xuri/excelize/v2 uses an attacker-controlled <row r="N"> XML attribute value directly as the l…

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.

Affected products

Qax-os Excelize — versions < 2.11.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-54063?: CVE-2026-54063 is a high-severity vulnerability in Qax-os Excelize, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-07-10.
How severe is CVE-2026-54063?: High severity. CVSS v3 base score is 7.5 out of 10.