Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Excelize (github.com/xuri/excelize/v2) versions from 2.1.0 before 2.11.1-0.20260805032953-db93f8d89de7 are affected. An attacker who supplies a crafted spreadsheet with a Zip64 uncompressed size of 2^63 or more, without needing an account, can make OpenFile and OpenReader panic and stop the calling goroutine. Upgrade to 2.11.1-0.20260805032953-db93f8d89de7 or later, and avoid opening untrusted spreadsheet files until then.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0031, the 23rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:12 UTC First seen by agentprime
- 31 Oct 2026, 14:12 UTC Confirmed by OSV