CVE-2026-104798 | The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.8.7. The public `mcs` GET parameter is reflected into post content unsanitized before WordPress core's `do_shortcode` filter runs, allowing an unauthenticated attacker to inject a nested `[my_calendar above=...]` shortcode; `mc_generate_calendar_nav()` then splits the `above` attribute on commas and dispatches each ele
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.8.7. The public `mcs` GET parameter is reflected into post content unsanitized before WordPress core's `do_shortcode` filter runs, allowing an unauthenticated attacker to inject a nested `[my_calendar above=...]` shortcode; `mc_generate_calendar_nav()` then splits the `above` attribute on commas and dispatches each element via `call_user_func()` with no authentication, authorization, or callable allowlist check. This makes it possible for unauthenticated attackers to invoke arbitrary loaded PHP functions, enabling a call chain in which the shortcode `$params` array is passed to `edit_user()` — which PHP coerces to integer `1` as the `$user_id` argument — overwriting the credentials of the initial Administrator account (user ID 1) and granting the attacker full wp-admin access. Exploitation is trivially reachable via the plugin's auto-generated `/my-calendar/` page, which is publicly accessible by default upon plugin activation.
- 🔗 www.wordfence.com/threat-intel/vulnerabilities/id/e8aa6ee7-…
- 🔗 plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.6/my-calenda…
- 🔗 plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.6/my-calenda…
- 🔗 plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.6/my-calenda…
- 🔗 plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.6/my-calenda…
- 🔗 plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.6/my-calenda…
- 🔗 plugins.trac.wordpress.org/browser/my-calendar/tags/3.8.6/my-calenda…
- 🔗 plugins.trac.wordpress.org/changeset
```Code``` unterstützt. Zero-Day & Vulnerability Intelligence Hub
Echtzeit-Tracking mit EPSS Exploit-Wahrscheinlichkeiten, Angriffsvektor-Decodern und KI-Patch-Anleitungen.
📊 Historien-Charts — Criticals-Trend · Vendors · EPSS-Verteilung
| Tier | CVEs | Anteil |
|---|---|---|
| ≥90 % | 720 | 0,2 % |
| ≥50 % | 3.224 | 0,9 % |
| ≥10 % | 22.097 | 6,0 % |
| <10 % | 345.335 | 93,0 % |
CVE-2026-104798 | The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.8.7. The public `mcs` GET parameter is reflected into post content unsanitized before WordPress core's `do_shortcode` filter runs, allowing an unauthenticated attacker to inject a nested `[my_calendar above=...]` shortcode; `mc_generate_calendar_nav()` then splits the `above` attribute on commas and dispatches each ele
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.8.7. The public `mcs` GET parameter is reflected into post content unsanitized before WordPress co
Noch keine Analyse zu CVE-2026-104798
Sei der Erste: Einschätzung, Betroffenheit, Workaround oder PoC — mit Antworten im Thread.