wpForo Forum <= 3.1.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'location' Profile Field
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The wpForo Forum plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'location' Profile Field in all versions up to, and including, 3.1.1 due to insufficient input sanitization and output escaping. 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. The sanitize_text_field() function applied at input does not encode double quotes, allowing attribute breakout via a payload that escapes the href attribute context and injects event handler attributes.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| gVectors Team | wpForo Forum | up to 3.1.1 | — | No fix listed | CNA |
- wpForo Forum VendorgVectors Team Affected up to 3.1.1 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:*:*:* | — | — | gVectors Team |
- cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:*:*:* Versions — — ·gVectors Team
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15021
- 2026-10-03 Alias added: GHSA-76cp-m73j-f6wq
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2cd364c5-c053-4c50-8232-bb47ab8e834b?source=cve
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.1/classes/Forms.php#L1035
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.1/classes/Members.php#L1031
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.1/classes/Forms.php#L1074
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.5/classes/Forms.php#L1035
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.5/classes/Members.php#L1031
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.5/classes/Forms.php#L1074
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3603849%40wpforo&new=3603849%40wpforo
More gVectors Team vulnerabilities
- TI-2020-14828 A Remote Code Execution vulnerability exists in the gVectors wpDiscuz plugin 7.0 through… CVSS 3.1CRITICAL 10.0
- TI-2026-17809 Voltronic Power SNMP Web Pro 1.1 Path Traversal via upload.cgi CVSS 4.0HIGH 8.7
- TI-2023-02108 Server-side request forgery in gVectors Team wpForo Forum CVSS 3.1HIGH 8.8
- TI-2023-02165 wpForo Forum < 2.1.9 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
- TI-2020-10702 A SQL injection issue in the gVectors wpDiscuz plugin 5.3.5 and earlier for WordPress… CVSS 3.1CRITICAL 9.8
- TI-2026-36676 WordPress wpForo Forum plugin <= 3.1.0 - Broken Authentication vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-15021 · CVE Program
- CVE-2026-15021 · NVD
- FIRST EPSS
- GHSA-76cp-m73j-f6wq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences