Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Excelize (Go module github.com/xuri/excelize/v2) versions 2.3.1 up to, but not including, 2.11.1-0.20260906004932-2badfcd5841d are affected. An attacker who can get a crafted spreadsheet file opened by the library can make OpenFile spend a very long time on CPU, because the key-derivation loop runs an attacker-chosen number of iterations even when no password is set, and the call cannot be cancelled. The source reports the result is a denial of service and no confidentiality or integrity impact. Upgrade to 2.11.1-0.20260906004932-2badfcd5841d, which contains the fix.
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 |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0036, the 30th percentile, on 8 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