CVE-2026-118337 Improper access control in Forms in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to bypass web origin policy via a crafted HTML page.
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Check this codebase for CVE-2026-118337 and fix it if it is affected.
What it is: CVE-2026-118337 is a vulnerability in Google Chrome, published on 27 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-118337 in the wild and no public exploit code.
Affected product: Google Chrome. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-118337/ (Markdown: https://insights.sbomify.com/CVE-2026-118337/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-118337?
CVE-2026-118337 is a vulnerability in Google Chrome, published on 27 Oct 2026.
Official description
Improper access control in Forms in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
Weakness: CWE-284
Which versions are affected by CVE-2026-118337?
How do I fix CVE-2026-118337?
Upgrade to a fixed version.
Is CVE-2026-118337 being exploited?
There is no known exploitation of CVE-2026-118337 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-118337, ECHO-1e4a-90a7-90de, GHSA-8jpv-j2f3-9p56.