# CVE-2026-21429: Emlog has Broken Access Control (BAC)

> Attackers can bypass restrictions to edit or delete published articles in Emlog when specific admin controls are enabled.

- **Severity:** Low 2.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Jan 2026
- **Updated:** 2 Jan 2026
- **Also known as:** GHSA-jw5v-2g53-rx8w

## What is CVE-2026-21429?

CVE-2026-21429 is a low-severity missing authorization vulnerability in Emlog Emlog, published on 2 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Emlog is an open source website building system. In version 2.5.23, the admin can set controls which makes users unable to edit or delete their articles after publishing them. As of time of publication, no known patched versions are available.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-21429?

It affects 1 product.


Products: Emlog Emlog.

## How do I fix CVE-2026-21429?

No fix has been published for CVE-2026-21429 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-21429 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-21429 exists.

## Other vulnerabilities in Emlog Emlog

- [CVE-2025-29401](https://insights.sbomify.com/CVE-2025-29401/): File upload in n/a (critical 9.8)
- [CVE-2025-25783](https://insights.sbomify.com/CVE-2025-25783/): File upload in n/a (critical 9.8)
- [CVE-2023-44973](https://insights.sbomify.com/CVE-2023-44973/): File upload in n/a (critical 9.8)
- [CVE-2023-44974](https://insights.sbomify.com/CVE-2023-44974/): File upload in n/a (critical 9.8)
- [CVE-2023-43291](https://insights.sbomify.com/CVE-2023-43291/): Deserialization in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-21429 and fix it if it is affected.

What it is: CVE-2026-21429 is a low-severity missing authorization vulnerability in Emlog Emlog, published on 2 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-21429 exists.

Affected product: Emlog Emlog. 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-2026-21429/ (Markdown: https://insights.sbomify.com/CVE-2026-21429/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-21429
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-21429
- OSV: https://osv.dev/vulnerability/CVE-2026-21429

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-21429/
Summaries are generated and may contain mistakes; the official description above is the record.