# CVE-2026-5841: Tenda i3 HTTP R7WebsSecurityHandler path traversal

> Remote attackers can exploit a path traversal vulnerability in the Tenda i3 router's HTTP handler to access unauthorized files.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Apr 2026
- **Updated:** 9 Apr 2026
- **Also known as:** GHSA-jm2v-6xpj-h8v4

## What is CVE-2026-5841?

CVE-2026-5841 is a medium-severity path traversal vulnerability in Tenda i3, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A weakness has been identified in Tenda i3 1.0.0.6(2204). The affected element is the function R7WebsSecurityHandler of the component HTTP Handler. Executing a manipulation can lead to path traversal. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-5841?

It affects 1 product.


Products: Tenda I3 Firmware.

## How do I fix CVE-2026-5841?

No fix has been published for CVE-2026-5841 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5841 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5841 exists.

## Other vulnerabilities in Tenda i3

- [CVE-2026-3970](https://insights.sbomify.com/CVE-2026-3970/): Tenda i3 wifiSSIDget formwrlSSIDget stack-based overflow (high 8.7)
- [CVE-2026-3971](https://insights.sbomify.com/CVE-2026-3971/): Tenda i3 wifiSSIDset formwrlSSIDset stack-based overflow (high 8.7)
- [CVE-2026-3799](https://insights.sbomify.com/CVE-2026-3799/): Tenda i3 setcfm formSetCfm stack-based overflow (high 8.7)
- [CVE-2026-3801](https://insights.sbomify.com/CVE-2026-3801/): Tenda i3 setAutoPing formSetAutoPing stack-based overflow (high 8.7)
- [CVE-2026-3802](https://insights.sbomify.com/CVE-2026-3802/): Tenda i3 exeCommand formexeCommand stack-based overflow (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5841 and fix it if it is affected.

What it is: CVE-2026-5841 is a medium-severity path traversal vulnerability in Tenda i3, published on 9 Apr 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-2026-5841 exists.

Affected product: Tenda i3. 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-2026-5841/ (Markdown: https://insights.sbomify.com/CVE-2026-5841/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5841
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5841
- OSV: https://osv.dev/vulnerability/CVE-2026-5841

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5841/
Summaries are generated and may contain mistakes; the official description above is the record.