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  4. CVE 2026 107219 excelize unbounded spincount in agile decryption
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Back to active CVEs
High · CVSS 7.5CVE-2026-107219GHSA-JRFJ-FHJ2-JJVM

Excelize: Unbounded spinCount in agile decryption burns CPU during OpenFileCVE-2026-107219

Answer in brief

CVE-2026-107219 records a High severity (CVSS 7.5) vulnerability in Excelize: Unbounded spinCount in agile decryption burns CPU during OpenFile. The current sources do not mark it as known exploited. The current feed maps qax-os/excelize (generic), github.com/xuri/excelize/v2 (go). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 7, 2026Updated Oct 7, 2026Source checked Oct 7, 2026First seen by HOL Oct 7, 2026Material review Oct 7, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps qax-os/excelize (generic), github.com/xuri/excelize/v2 (go). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
qax-os/excelizegeneric>=2.3.1 <=2.11.0Not reported
github.com/xuri/excelize/v2go>=2.3.1,<2.11.1-0.20260906004932-2badfcd5841d2.11.1-0.20260906004932-2badfcd5841d

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for qax-os/excelize, github.com/xuri/excelize/v2.
  2. 2Review the reported fix. Update github.com/xuri/excelize/v2 to 2.11.1-0.20260906004932-2badfcd5841d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 7, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 7, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 7, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, agile decryption accepts an attacker-controlled spinCount and performs that many password-key derivation iterations before verifier validation. OpenFile reaches agileDecrypt, which passes the unbounded spinCount to convertPasswdToKey before password verification. When a crafted OLE encrypted-workbook header supplies an excessive spinCount and the file is opened, the key-derivation loop performs unbounded attacker-selected work and cannot be cancelled, allowing an attacker to consume a CPU core for an attacker-controlled duration. No fixed version is available as of this review.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Excelize: Unchecked pivot-cache field index in extractPivotTableFields causes unrecoverable panicSame qax-os/excelize package
  • Excelize: Unbounded row number in Rows.Columns makes GetRows and the Rows iterator loop for daysSame qax-os/excelize package
  • Excelize: Nil-pointer dereference in GetSlicers when a worksheet has extLst present but no drawing elementSame qax-os/excelize package
  • Excelize Decrypt: unrecoverable panics on malformed OLE/CFB encrypted workbooksSame qax-os/excelize package
  • Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoSSame qax-os/excelize package
  • Excelize ANCHORARRAY: mutually-referencing array formulas recurse unboundedly via re-entrant CalcCellValue, causing a fatal stack overflowSame qax-os/excelize package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-400
Source
CVE List V5
Source checked
Oct 7, 2026
References
4 linked sources
Open source record