CVE-2026-124684 This issue can cause a heap-use-after-free when an embedder unloads a ReloadableString buffer while a previously returned raw character pointer remains in use.
Medium 5.1
Published
Updated
Check this codebase for CVE-2026-124684 and fix it if it is affected.
What it is: CVE-2026-124684 is a medium-severity vulnerability in Samsung Open Source Escargot, published on 9 Nov 2026.
Exploitation: There is no known exploitation of CVE-2026-124684 in the wild and no public exploit code.
Affected product: Samsung Open Source Escargot. 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-2026-124684/ (Markdown: https://insights.sbomify.com/CVE-2026-124684/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-124684?
CVE-2026-124684 is a medium-severity vulnerability in Samsung Open Source Escargot, published on 9 Nov 2026.
Official description
This issue can cause a heap-use-after-free when an embedder unloads a ReloadableString buffer while a previously returned raw character pointer remains in use. Successful triggering may cause the Escargot-based process to crash, resulting in a denial of service.
Weakness: CWE-416
Which versions are affected by CVE-2026-124684?
How do I fix CVE-2026-124684?
No fix has been published for CVE-2026-124684 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-124684 being exploited?
There is no known exploitation of CVE-2026-124684 in the wild and no public exploit code.
Sources
Also known as GHSA-9jrp-q8cw-6g77.