CVE-2026-1655
EventPrime <= 4.2.8.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Event Modification via 'event_id' 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: no
- Technical impact: partial
Summary
The EventPrime plugin for WordPress is vulnerable to unauthorized post modification due to missing authorization checks in all versions up to, and including, 4.2.8.4. This is due to the save_frontend_event_submission function accepting a user-controlled event_id parameter and updating the corresponding event post without enforcing ownership or capability checks. This makes it possible for authenticated (Customer+) attackers to modify posts created by administrators by manipulating the event_id parameter granted they can obtain a valid nonce.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- metagauss EventPrime – Events Calendar, Bookings and Tickets
through 4.2.8.4
References 6
plugins.trac.wordpress.org
- browser/eventprime-event-calendar-management/trunk/includes/class-ep-ajax.php#L741
- browser/eventprime-event-calendar-management/trunk/includes/class-ep-ajax.php#L798
- browser/eventprime-event-calendar-management/tags/4.2.8.1/includes/class-ep-ajax.php#L798
- browser/eventprime-event-calendar-management/tags/4.2.8.1/includes/class-ep-ajax.php#L741
- changeset?sfp_email=&sfph_mail=&reponame=&new=3455239%40eventprime-event-calendar-management%2Ftrunk&old=3452796%40eventprime-event-calendar-management%2Ftrunk&sfp_email=&sfph_mail=