# CVE-2026-1734: Zhong Bang CRMEB crontab Endpoint CrontabController.php authorization

> Remote attackers can access the crontab endpoint without authorization, potentially reading or modifying data in Zhong Bang CRMEB.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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:** 1 Feb 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-qxq4-hr62-m2rg

## What is CVE-2026-1734?

CVE-2026-1734 is a medium-severity missing authorization vulnerability in Zhong Bang CRMEB, published on 1 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A security flaw has been discovered in Zhong Bang CRMEB up to 5.6.3. This vulnerability affects unknown code of the file crmeb/app/api/controller/v1/CrontabController.php of the component crontab Endpoint. The manipulation results in missing authorization. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-863 (Incorrect Authorization), CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-1734?

It affects 1 product.


Products: Crmeb Crmeb.

## How do I fix CVE-2026-1734?

No fix has been published for CVE-2026-1734 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1734 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1734 exists.

## Other vulnerabilities in Zhong Bang CRMEB

- [CVE-2025-25763](https://insights.sbomify.com/CVE-2025-25763/): SQL injection in n/a (critical 9.8)
- [CVE-2023-30185](https://insights.sbomify.com/CVE-2023-30185/): File upload in n/a (critical 9.8)
- [CVE-2020-21787](https://insights.sbomify.com/CVE-2020-21787/): File upload in n/a (critical 9.8)
- [CVE-2020-25466](https://insights.sbomify.com/CVE-2020-25466/): Server-side request forgery in n/a (critical 9.8)
- [CVE-2020-21394](https://insights.sbomify.com/CVE-2020-21394/): SQL injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1734 and fix it if it is affected.

What it is: CVE-2026-1734 is a medium-severity missing authorization vulnerability in Zhong Bang CRMEB, published on 1 Feb 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-2026-1734 exists.

Affected product: Zhong Bang CRMEB. 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-2026-1734/ (Markdown: https://insights.sbomify.com/CVE-2026-1734/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1734
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1734
- OSV: https://osv.dev/vulnerability/CVE-2026-1734

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1734/
Summaries are generated and may contain mistakes; the official description above is the record.