CVE-2026-0866 After the publication of the PoC by the researcher and further analysis, we have determined that this issue does not constitute a valid vulnerability.
Not scored
Updated
Check this codebase for CVE-2026-0866 and fix it if it is affected.
What it is: CVE-2026-0866 is a vulnerability.
Exploitation: There is no known exploitation of CVE-2026-0866 in the wild and no public exploit code.
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-2026-0866/ (Markdown: https://insights.sbomify.com/CVE-2026-0866/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-0866?
CVE-2026-0866 is a vulnerability.
Official description
After the publication of the PoC by the researcher and further analysis, we have determined that this issue does not constitute a valid vulnerability. The technique described is an obfuscation method and does not bypass or impact any implicit or explicit security controls.
Which versions are affected by CVE-2026-0866?
How do I fix CVE-2026-0866?
No fix has been published for CVE-2026-0866 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-0866 being exploited?
There is no known exploitation of CVE-2026-0866 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-vv82-vv8r-v223.