CVE-2023-4251Public exploitNetwork attack vector

Unauthorized booking creation via invalid nonce acceptance

Published Oct 31, 2023 · Updated Apr 22, 2025

Cross-site request forgery in EventPrime before 3.2.0 allows remote attackers to create unwanted bookings through a logged-in user. The ep_save_event_booking AJAX action accepts booking data even when ep_save_event_booking_nonce contains an invalid value. Exploitation requires a logged-in user to submit an attacker-crafted form, and the resulting integrity impact is limited to unauthorized booking creation.

CVSS severity4.3
Medium
EPSS probability0.23%
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 a logged-in user. The ep_save_event_booking AJAX action accepts booking data even when ep_save_event_booking_nonce contains an invalid value. Exploitation requires a logged-in user to submit an attacker-crafted form, and the resulting integrity impact is limited to unauthorized booking creation.

The record

CVE
CVE-2023-4251
Published
Oct 31, 2023
Updated
Apr 22, 2025
Vendor
EventPrime Events
Product
EventPrime
Classifications
CWE-352, CAPEC-62, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1204.001User Execution: Malicious Link

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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