CVE-2026-11896
My Calendar <= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14 via the 'vcal' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to enumerate occurrence IDs and access the full iCalendar export of non-public, draft, trashed, and personal calendar events, disclosing sensitive event metadata including titles, descriptions, dates, locations, organizer and host details, permalinks, and related calendar metadata.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- joedolson My Calendar – Accessible Event Manager
through 3.7.14
References 14
plugins.trac.wordpress.org
- browser/my-calendar/tags/3.7.14/my-calendar-api.php#L212
- browser/my-calendar/tags/3.7.14/my-calendar.php#L209
- browser/my-calendar/tags/3.7.14/my-calendar-api.php#L246
- browser/my-calendar/tags/3.7.14/my-calendar-events.php#L748
- browser/my-calendar/tags/3.7.14/includes/ical.php#L26
- browser/my-calendar/tags/3.7.14/includes/date-utilities.php#L417
- browser/my-calendar/trunk/my-calendar-api.php#L212
- browser/my-calendar/trunk/my-calendar.php#L209
- browser/my-calendar/trunk/my-calendar-api.php#L246
- browser/my-calendar/trunk/my-calendar-events.php#L748
- browser/my-calendar/trunk/includes/ical.php#L26
- browser/my-calendar/trunk/includes/date-utilities.php#L417
- changeset?sfp_email=&sfph_mail=&reponame=&old=3572191%40my-calendar&new=3572191%40my-calendar&sfp_email=&sfph_mail=