Cyber Resilience

CVE-2024-0235

Access Control in Myeventon Eventon ≤ 2.2.7

Access Control
Published
16 January 2024
Modified
20 June 2025
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.38 98th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2024-0235 is a medium-severity Missing Authorization (CWE-862) vulnerability in Myeventon Eventon. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-24 (Access Control Decisions) and AC-25 (Reference Monitor) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

The EventON WordPress plugin, in versions prior to 4.5.5 and 2.2.7, is affected by a missing authorization vulnerability (CWE-862) in an AJAX action. This flaw allows unauthenticated access to retrieve email addresses of any users registered on the site, corresponding to a CVSS 3.1 score of 5.3 reflecting limited impact on confidentiality without requiring authentication or user interaction.

Unauthenticated remote attackers can directly invoke the unprotected AJAX endpoint to enumerate and extract user email addresses from the WordPress installation. This information disclosure can support further attacks such as targeted phishing or credential-stuffing campaigns against site users.

The WPScan advisories for this issue identify the root cause in the plugin's authorization checks and state that the vulnerability is resolved by updating to EventON 4.5.5 or 2.2.7. Site administrators are advised to apply the patched versions to eliminate the exposed endpoint. The associated EPSS score remains elevated near its peak of 0.8732.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

The EventON WordPress plugin before 4.5.5, EventON WordPress plugin before 2.2.7 do not have authorisation in an AJAX action, allowing unauthenticated users to retrieve email addresses of any users on the blog

CWE(s)
CWE-862

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1548 Abuse Elevation Control Mechanism Privilege Escalation
Adversaries may circumvent mechanisms designed to control privilege elevation to gain higher-level permissions.
attack.mitre.org →
T1556 Modify Authentication Process Defense Impairment
Adversaries may modify authentication mechanisms and processes to access user credentials or enable otherwise unwarranted access to accounts.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-3527Same product: Myeventon Eventon
CVE-2023-2796Same product: Myeventon Eventon
CVE-2024-0237Same product: Myeventon Eventon
CVE-2024-0236Same product: Myeventon Eventon
CVE-2024-0238Same product: Myeventon Eventon
CVE-2023-6158Same product: Myeventon Eventon
CVE-2025-43838Shared CWE-862
CVE-2023-7268Shared CWE-862
CVE-2024-1158Shared CWE-862
CVE-2024-37427Shared CWE-862

Affected Assets

myeventon
eventon
≤ 2.2.7 · 4.0 — 4.5.5

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 5 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match

AC-3 directly requires enforcement of authorization decisions on every access request, structurally eliminating missing authorization checks.

AC-24 Access Control Decisions good match

AC-24 mandates that access control decisions are applied to each request, preventing bypass of authorization logic.

AC-25 Reference Monitor good match

AC-25 requires a tamperproof, always-invoked reference monitor that ensures authorization checks cannot be omitted.

AC-6 Least Privilege partial match

AC-6 reduces the set of actions reachable without proper authorization, limiting blast radius of missing checks.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-05 full match
prevents

Explicitly requires defining, enforcing, and reviewing authorizations and least privilege, directly preventing missing authorization checks.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.3 Information access restriction mostly match
prevents

Requiring authentication and credentials before any access occurs eliminates the absence of authorization checks that would otherwise allow an unauthenticated actor to reach protected resources.

A.5.15 Access control partial match
prevents

Requiring formal authorization of every access request before rights are granted ensures that checks for required permissions are performed, preventing missing authorization checks from being introduced.

A.5.18 Access rights partial match
prevents

Mandatory authorization checks and central records of granted rights ensure that every access attempt is preceded by an explicit decision rather than relying on missing checks.

A.5.3 Segregation of duties partial match
mitigates

Segregating the approval of access rights from their implementation provides an independent check that reduces the impact of missing authorization checks in the resulting system configuration.

A.5.35 Independent review of information security partial match
finds

By requiring competent outsiders to verify that every function enforces the need-to-know principle, the control lowers the likelihood that missing authorization checks persist undetected.

A.5.8 Information security in project management partial match
prevents

Defining authorization responsibilities and reviewing risk-treatment progress throughout the project lifecycle catches missing authorization checks before the system is deployed.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 8 (2 rules)
  • V-248581 OL 8 must require users to provide a password for privilege escalation. prevents CWE-862
  • V-252656 The OL 8 operating system must not be configured to bypass password requirements for privilege escalation. prevents CWE-862
RHEL 7 (2 rules)
  • V-251704 The Red Hat Enterprise Linux operating system must not be configured to bypass password requirements for privilege escalation. prevents CWE-862
  • V-204429 The Red Hat Enterprise Linux operating system must be configured so that users must provide a password for privilege escalation. prevents CWE-862

References