Gnumeric: gnumeric: heap use-after-free when opening a malformed workbook (CVE-2026-97222) | HOL Guard CVE

Medium · CVSS 5.5CVE-2026-97222

Gnumeric: gnumeric: heap use-after-free when opening a malformed workbook

Answer in brief

CVE-2026-97222 records a Medium severity (CVSS 5.5) vulnerability in Gnumeric: gnumeric: heap use-after-free when opening a malformed workbook. The current sources do not mark it as known exploited. The current feed maps GNOME/gnumeric (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

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

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.5. 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 GNOME/gnumeric (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
GNOME/gnumericgeneric	>=1.11.0 <*	*

Recommended response

Check inventory. Check lockfiles and deployed manifests for GNOME/gnumeric.
Review the reported fix. Source-reported workaround: Do not open Gnumeric workbook files from untrusted sources. No application-level mitigation that preserves processing of untrusted workbooks is known.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

A heap use-after-free flaw was found in Gnumeric. When a user opens a crafted Gnumeric workbook containing a malformed SheetObjectComponent element, the XML parser can dereference a freed sheet-object component, causing Gnumeric to crash.

Quoted source text, attributed separately from HOL analysis.