# CVE-2025-15458: bg5sbk MiniCMS Article post-edit.php improper authentication

> Remote attackers can bypass authentication in MiniCMS to modify articles, posing a risk to content integrity and administrative access.

- **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:** 5 Jan 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-3rg8-47q7-qh6r

## What is CVE-2025-15458?

CVE-2025-15458 is a medium-severity authentication bypass vulnerability in bg5sbk MiniCMS, published on 5 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was determined in bg5sbk MiniCMS up to 1.8. This affects an unknown function of the file /mc-admin/post-edit.php of the component Article Handler. Executing a manipulation can lead to improper authentication. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2025-15458?

It affects 1 product.


Products: 1234n Minicms.

## How do I fix CVE-2025-15458?

No fix has been published for CVE-2025-15458 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-15458 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15458 exists.

## Other vulnerabilities in bg5sbk MiniCMS

- [CVE-2020-19896](https://insights.sbomify.com/CVE-2020-19896/): Code injection in n/a (critical 9.8)
- [CVE-2020-36052](https://insights.sbomify.com/CVE-2020-36052/): Path traversal in n/a (critical 9.8)
- [CVE-2018-18892](https://insights.sbomify.com/CVE-2018-18892/): Code injection in n/a (critical 9.8)
- [CVE-2021-33387](https://insights.sbomify.com/CVE-2021-33387/): Cross-site scripting in n/a (critical 9.6)
- [CVE-2018-9092](https://insights.sbomify.com/CVE-2018-9092/): Cross-site request forgery in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-15458 and fix it if it is affected.

What it is: CVE-2025-15458 is a medium-severity authentication bypass vulnerability in bg5sbk MiniCMS, published on 5 Jan 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-2025-15458 exists.

Affected product: bg5sbk MiniCMS. 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-2025-15458/ (Markdown: https://insights.sbomify.com/CVE-2025-15458/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-15458
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-15458
- OSV: https://osv.dev/vulnerability/CVE-2025-15458

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-15458/
Summaries are generated and may contain mistakes; the official description above is the record.