# CVE-2022-21142: Auth bypass in a-blog cms

> Remote unauthenticated attackers can bypass authentication in a-blog cms under specific conditions, requiring administrators to upgrade to patched versions.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Feb 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-56mw-g4x8-4wwm

## What is CVE-2022-21142?

CVE-2022-21142 is a critical authentication bypass vulnerability in appleple inc. a-blog cms, published on 24 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Authentication bypass vulnerability in a-blog cms Ver.2.8.x series versions prior to Ver.2.8.74, Ver.2.9.x series versions prior to Ver.2.9.39, Ver.2.10.x series versions prior to Ver.2.10.43, and Ver.2.11.x series versions prior to Ver.2.11.41 allows a remote unauthenticated attacker to bypass authentication under the specific condition.

Weakness: CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2022-21142?

It affects 1 product.


Products: Appleple A-Blog Cms.

## How do I fix CVE-2022-21142?

No fix has been published for CVE-2022-21142 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-21142 being exploited?

There is no known exploitation of CVE-2022-21142 in the wild and no public exploit code.

## Other vulnerabilities in appleple inc. a-blog cms

- [CVE-2025-36560](https://insights.sbomify.com/CVE-2025-36560/): Server-side request forgery in a-blog cms (critical 9.2)
- [CVE-2024-23180](https://insights.sbomify.com/CVE-2024-23180/): File upload in a-blog cms (high 8.8)
- [CVE-2024-23348](https://insights.sbomify.com/CVE-2024-23348/): Cross-site scripting in a-blog cms (high 8.8)
- [CVE-2024-23182](https://insights.sbomify.com/CVE-2024-23182/): Path traversal in a-blog cms (high 8.1)
- [CVE-2025-31103](https://insights.sbomify.com/CVE-2025-31103/): Deserialization in a-blog cms (Ver. 2.8.x series) (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-21142 and fix it if it is affected.

What it is: CVE-2022-21142 is a critical authentication bypass vulnerability in appleple inc. a-blog cms, published on 24 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-21142 in the wild and no public exploit code.

Affected product: appleple inc. a-blog cms. 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-2022-21142/ (Markdown: https://insights.sbomify.com/CVE-2022-21142/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-21142
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-21142
- OSV: https://osv.dev/vulnerability/CVE-2022-21142

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-21142/
Summaries are generated and may contain mistakes; the official description above is the record.