Groups <= 3.10.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'groups_group_info' Shortcode
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 Groups plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'groups_group_info' shortcode in all versions up to, and including, 3.10.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-0549
- 2026-10-03 Alias added: GHSA-8m9g-3hqh-3f45
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/75000e67-7914-43af-be1d-82990ada5129?source=cve
- https://plugins.trac.wordpress.org/browser/groups/tags/3.9.0/lib/views/class-groups-shortcodes.php?marks=185#L185
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3438974%40groups&new=3438974%40groups&sfp_email=&sfph_mail=#file39
More itthinx vulnerabilities
- TI-2026-73984 Object injection in itthinx Affiliates WordPress plugin CVSS 3.1CRITICAL 9.8
- TI-2026-53915 Groups <= 4.6.0 - Authenticated (Subscriber+) Privilege Escalation via 'groups_join' Shortcode CVSS 3.1HIGH 8.8
- TI-2025-10771 Groups <= 3.7.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Group Join CVSS 3.1MEDIUM 4.3
Sources
- CVE-2026-0549 · CVE Program
- CVE-2026-0549 · NVD
- FIRST EPSS
- GHSA-8m9g-3hqh-3f45 · 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