CVE-2021-3706 Sensitive Cookie Without 'HttpOnly' Flag in pi-hole/adminlte
High 7.4
Published
Updated
Check this codebase for CVE-2021-3706 and fix it if it is affected.
What it is: CVE-2021-3706 is a high-severity vulnerability in pi-hole/adminlte, published on 15 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-3706 in the wild and no public exploit code.
Affected product: pi-hole/adminlte. 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-2021-3706/ (Markdown: https://insights.sbomify.com/CVE-2021-3706/index.md)
Attackers can steal sensitive session cookies via XSS because the HttpOnly flag is missing, allowing session hijacking.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-3706?
CVE-2021-3706 is a high-severity vulnerability in pi-hole/adminlte, published on 15 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
adminlte is vulnerable to Sensitive Cookie Without 'HttpOnly' Flag
Which versions are affected by CVE-2021-3706?
It affects 1 product.
Products include Pi-Hole Web Interface.
How do I fix CVE-2021-3706?
No fix has been published for CVE-2021-3706 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-3706 being exploited?
There is no known exploitation of CVE-2021-3706 in the wild and no public exploit code.
Other vulnerabilities in pi-hole/adminlte
- CVE-2026-33765 Pi-hole Web Interface has a Command Injection Vulnerability
- CVE-2023-23614 Improper session handling of "Remember me for 7 days" functionality
- CVE-2025-59151 Pi-hole Admin Interface vulnerable to HTTP response header injection via CRLF injection
- CVE-2021-41175 Stored XSS in Client Groups Management (Authenticated)
- CVE-2021-3811 Cross-site Scripting (XSS) - Reflected in pi-hole/adminlte
Sources
Also known as GHSA-6x52-4rr6-8fw7.