# CVE-2026-22081: Cookie without HTTPOnly Flag Vulnerability in Tenda Wireless Routers

> Attackers can steal session cookies from Tenda routers due to missing HTTPOnly flags, leading to unauthorized administrative access.

- **Severity:** High 8.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jan 2026
- **Updated:** 9 Jan 2026
- **Also known as:** GHSA-4f2m-4qcx-27xf

## What is CVE-2026-22081?

CVE-2026-22081 is a high-severity vulnerability in Tenda 300Mbps Wireless Router F3 and N300 Easy Setup Router, published on 9 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

This vulnerability exists in Tenda wireless routers (300Mbps Wireless Router F3 and N300 Easy Setup Router) due to the missing HTTPOnly flag for session cookies associated with the web-based administrative interface. A remote at-tacker could exploit this vulnerability by capturing session cookies transmitted over an insecure HTTP connection.

Successful exploitation of this vulnerability could allow the attacker to obtain sensitive information and gain unau-thorized access to the targeted device.

Weakness: CWE-1004 (Sensitive Cookie Without 'HttpOnly' Flag)

## Which versions are affected by CVE-2026-22081?


## How do I fix CVE-2026-22081?

No fix has been published for CVE-2026-22081 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-22081 being exploited?

There is no known exploitation of CVE-2026-22081 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-22081 and fix it if it is affected.

What it is: CVE-2026-22081 is a high-severity vulnerability in Tenda 300Mbps Wireless Router F3 and N300 Easy Setup Router, published on 9 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-22081 in the wild and no public exploit code.

Affected product: Tenda 300Mbps Wireless Router F3 and N300 Easy Setup Router. 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-2026-22081/ (Markdown: https://insights.sbomify.com/CVE-2026-22081/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-22081
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22081
- OSV: https://osv.dev/vulnerability/CVE-2026-22081

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-22081/
Summaries are generated and may contain mistakes; the official description above is the record.