CVE-2026-38976 Null dereference in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2026-38976 and fix it if it is affected.
What it is: CVE-2026-38976 is a high-severity vulnerability in n/a, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-38976 exists.
Affected product: n/a. 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-2026-38976/ (Markdown: https://insights.sbomify.com/CVE-2026-38976/index.md)
A NULL pointer dereference in mrubyc allows attackers to cause a denial of service via top-level super calls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-38976?
CVE-2026-38976 is a high-severity vulnerability in n/a, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in op_super() / OP_SUPER due to a missing runtime guard for top-level super.
Weakness: CWE-476
Which versions are affected by CVE-2026-38976?
How do I fix CVE-2026-38976?
No fix has been published for CVE-2026-38976 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-38976 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-38976 exists.
Sources
Also known as GHSA-ff2c-rpvx-jp6m.