# CVE-2026-34791: Endian Firewall /cgi-bin/logs_proxy.cgi DATE Perl Command Injection

> Authenticated attackers can execute arbitrary OS commands on Endian Firewall via the DATE parameter in logs_proxy.cgi due to insufficient input validation.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Apr 2026
- **Updated:** 3 Apr 2026
- **Also known as:** GHSA-hwww-mh59-5rf2

## What is CVE-2026-34791?

CVE-2026-34791 is a high-severity command injection vulnerability in Endian Firewall, published on 2 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Endian Firewall version 3.3.25 and prior allow authenticated users to execute arbitrary OS commands via the DATE parameter to /cgi-bin/logs_proxy.cgi. The DATE parameter value is used to construct a file path that is passed to a Perl open() call, which allows command injection due to an incomplete regular expression validation.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-34791?

It affects 1 product.


Products: Endian Firewall Community.

## How do I fix CVE-2026-34791?

No fix has been published for CVE-2026-34791 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-34791 being exploited?

There is no known exploitation of CVE-2026-34791 in the wild and no public exploit code.

## Other vulnerabilities in Endian Firewall

- [CVE-2021-27201](https://insights.sbomify.com/CVE-2021-27201/): Command injection in n/a (high 8.8)
- [CVE-2026-34792](https://insights.sbomify.com/CVE-2026-34792/): Endian Firewall /cgi-bin/logs_clamav.cgi DATE Perl Command Injection (high 8.7)
- [CVE-2026-34793](https://insights.sbomify.com/CVE-2026-34793/): Endian Firewall /cgi-bin/logs_firewall.cgi DATE Perl Command Injection (high 8.7)
- [CVE-2026-34794](https://insights.sbomify.com/CVE-2026-34794/): Endian Firewall /cgi-bin/logs_ids.cgi DATE Perl Command Injection (high 8.7)
- [CVE-2026-34795](https://insights.sbomify.com/CVE-2026-34795/): Endian Firewall /cgi-bin/logs_log.cgi DATE Perl Command Injection (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34791 and fix it if it is affected.

What it is: CVE-2026-34791 is a high-severity command injection vulnerability in Endian Firewall, published on 2 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-34791 in the wild and no public exploit code.

Affected product: Endian Firewall. 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-2026-34791/ (Markdown: https://insights.sbomify.com/CVE-2026-34791/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34791
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34791
- OSV: https://osv.dev/vulnerability/CVE-2026-34791

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-34791/
Summaries are generated and may contain mistakes; the official description above is the record.