CVE-2026-110720 Consul-k8s vulnerable to a cross-namespace authorization bypass in component ACL binding rules
Critical 9.9
Published
Updated
Check this codebase for CVE-2026-110720 and fix it if it is affected.
What it is: CVE-2026-110720 is a critical vulnerability in HashiCorp Tooling, published on 26 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-110720 in the wild and no public exploit code.
Affected product: HashiCorp Tooling. 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-2026-110720/ (Markdown: https://insights.sbomify.com/CVE-2026-110720/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-110720?
CVE-2026-110720 is a critical vulnerability in HashiCorp Tooling, published on 26 Oct 2026.
Official description
Consul-k8s versions 0.42.0 and later are vulnerable to a cross-namespace authorization bypass in component ACL binding rules that may allow an attacker to obtain elevated Consul privileges. This vulnerability (CVE-2026-110720) is fixed in consul-k8s 2.1.0 and 1.8.18.
Weakness: CWE-863
Which versions are affected by CVE-2026-110720?
How do I fix CVE-2026-110720?
No fix has been published for CVE-2026-110720 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-110720 being exploited?
There is no known exploitation of CVE-2026-110720 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-3rqq-8xjm-v58x.