---
id: "CVE-2026-117897"
kind: "vulnerability"
aliases: ["CVE-2026-117897"]
title: "Firefox: incorrect boundary handling in table layout code, fixed in 159"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["browser", "desktop", "firefox", "runtime"]
not_affected_if: ["fixed-version-installed"]
published_at: "2026-10-27T14:16:45+00:00"
first_seen_at: "2026-10-27T14:32:22+00:00"
updated_at: "2026-10-27T14:37:42+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117897", "first_seen_at": "2026-10-27T14:32:22+00:00"}]
---

# Firefox: incorrect boundary handling in table layout code, fixed in 159

Firefox's Layout: Tables component mishandles boundary conditions, which the sources do not describe further. The flaw was fixed in Firefox 159 and Firefox ESR 115.44 and 153.6.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `firefox --version` (or check About Firefox) and compare against `159`, `115.44` for ESR 115, or `153.6` for ESR 153
- Check the Firefox version on managed fleets through your MDM or policy tooling

## Fix

- Update Firefox to `159` or later
- Update Firefox ESR to `115.44` or `153.6`, depending on the ESR branch in use

## Timeline

- 2026-10-27T14:32:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117897

## From the sources

Incorrect boundary conditions in the Layout: Tables component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.

---

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