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Advisory record · GHSA-2j4c-ffch-9f23

Excelize Decrypt: unrecoverable panics on malformed OLE/CFB encrypted workbooks

CVSS 7.5 HighEPSS 0.0024 · 15th percentile

Published by the GitHub Advisory Database at 8 Oct 2026, 16:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/xuri/excelize/v2Go>=2.3.1, <2.11.1-0.20260915055537-22f76f9acb942.11.1-0.20260915055537-22f76f9acb94
Identifiers
GHSA-2j4c-ffch-9f23 · CVE-2026-107214 · GO-2026-6684
Weakness (CWE)
CWE-248
Tags
Published
8 Oct 2026
Updated
19 Oct 2026

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 2.3.1 before 2.11.1-0.20260915055537-22f76f9acb94 are affected. A malformed OLE/CFB encrypted workbook passed to OpenFile, OpenReader or OpenBytes causes an unrecovered panic that terminates the calling process, and no password or authentication is needed. Upgrade to 2.11.1-0.20260915055537-22f76f9acb94 or later. The source gives few details on workarounds.

Written 1 Nov 2026.

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

ScoreRatingCVSSVectorSource
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 0.0024, the 15th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:11 UTC First seen by agentprime
  2. 31 Oct 2026, 14:11 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.