CVE-2023-5519Public exploitNetwork attack vector

Unwanted bookings via unvalidated AJAX nonce

Published Oct 31, 2023 · Updated Apr 23, 2025

Cross-site request forgery in EventPrime before 3.2.0 allows remote attackers to create unwanted bookings through logged-in users. The ep_save_event_booking AJAX action accepts booking data when ep_save_event_booking_nonce is invalid, then persists the forged booking. An event with a ticket type must exist, and a logged-in user must submit the attacker-controlled form; the resulting change is limited to booking creation.

CVSS severity4.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in EventPrime before 3.2.0 allows remote attackers to create unwanted bookings through logged-in users. The ep_save_event_booking AJAX action accepts booking data when ep_save_event_booking_nonce is invalid, then persists the forged booking. An event with a ticket type must exist, and a logged-in user must submit the attacker-controlled form; the resulting change is limited to booking creation.

The record

CVE
CVE-2023-5519
Published
Oct 31, 2023
Updated
Apr 23, 2025
Vendor
EventPrime Events
Product
EventPrime
Classifications
CWE-352, CAPEC-62
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

EventPrime Events · EventPrimeversion=0 <3.2.0

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
CAPEC-62Cross Site Request Forgery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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