Security Alert Summary
The Team Section Block plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in all versions up to and including 2.0.0. Insufficient input sanitization and output escaping on user-supplied social network link URLs allows authenticated users with Contributor-level access or higher to inject scripts that execute when an injected page is viewed.
CVE Details
- CVE ID: CVE-2026-0833
- Affected plugin / component: Team Section Block plugin for WordPress
- Affected versions: All versions up to and including 2.0.0
- Published: January 17, 2026 at 7:16 AM UTC
- Last modified: January 17, 2026 at 7:16 AM UTC
- CVSS v3.1: Base Score 6.4, Severity MEDIUM, Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Authentication / privileges / user interaction: Requires an authenticated user with low privileges (Contributor-level or higher). No user interaction required.
- Primary impact: Confidentiality: Low; Integrity: Low; Availability: None
- CWE / Weakness ID: CWE-79 (Improper Neutralization of Input During Web Page Generation – Cross-site Scripting)
Technical Details
The vulnerability is a stored Cross-Site Scripting (XSS) issue that exists in the plugin’s block due to insufficient input sanitization and missing output escaping for user-supplied social network link URLs. Because the plugin stores and renders those values without adequate escaping, an authenticated attacker who can create or edit the block (Contributor-level and above) may inject arbitrary JavaScript or HTML payloads into pages rendered by the block. Injected scripts will execute in the browsers of any user who views the affected page.
The CVE description specifically calls out user-supplied social network link URLs as the vector for injection. The weakness is a typical stored XSS case: malicious input is saved by the application and later rendered into a page without proper encoding or sanitization, allowing script execution in the context of the site.
How This Could Impact Your Website
Consider a small team-managed WordPress site where the site owner assigns Contributor access to external contractors and internal content creators. An attacker with Contributor access could add or edit a Team Section block and insert a malicious payload into a social link URL. Every team member or visitor who opens the page containing that block may have the attacker’s script executed in their browser.
- Site owner: could see reputation impact if visitors are exposed to unwanted scripting or redirected content.
- Internal staff: logged-in staff who visit the injected page could have session-related data or UI behavior manipulated within the constraints of the page context.
- External contributors or contractors: accounts with Contributor-level access could be used to introduce the payload, intentionally or accidentally.
Practical consequences include exposure of information visible in the browser (for example, user interface elements or data rendered on the page), and an increased risk of targeted phishing or social engineering against site users who view the injected page. If you’re unsure whether your site is affected or how to assess your current user roles and plugins, it may be worth having a professional review.
Recommended Actions
- Update the affected plugin as soon as a patched version is available. (The CVE entry does not specify a fixed version.)
- Review and reduce unnecessary user roles and capabilities, especially Contributor-level accounts.
- Enforce strong passwords and two-factor authentication for editors and administrators.
- Remove unused or unmaintained plugins and themes from your site.
- Monitor site activity and logs for unusual behavior, including recent edits to blocks and new content created by lower-privileged users.
If you’d like help reviewing your plugins, user roles, or overall WordPress security posture, our team at Freshy is happy to help.
References
- https://plugins.trac.wordpress.org/browser/team-section/tags/1.1.0/build/render.php#L3
- https://plugins.trac.wordpress.org/browser/team-section/trunk/build/render.php#L3
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3436953%40team-section&new=3436953%40team-section&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6348b119-a0dc-40ef-ae62-1de86dcefac7?source=cve
