VulnerabilityPublished 6 Aug 2026

CVE-2026-66451: Arraytics WP Event SOlution · Authentication Bypass Using an Alternate Path or Channel

Affects Arraytics WP Event SOlutionSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-g5q3-jjf3-h8h5

What to do

Affected software

Product	Affected	Fixed in
ArrayticsWP Event SOlution	Affected ≥ n/a, < 4.1.10	Fixed in–

AI-suggested

Until an official fix is released, users should monitor vendor communications for updates. No specific temporary mitigations are documented at this time.

Description

CVE-2026-66451 is an authentication bypass vulnerability affecting WP Event SOlution versions up to and including 4.1.9. This flaw allows unauthenticated attackers to bypass authentication mechanisms, potentially leading to limited confidentiality and integrity impacts. The vulnerability is classified under CWE-288, indicating broken authentication via an alternate path or channel. The CVSS 3.1 base score is 6.5, reflecting a medium severity level. No official patch or remediation guidance has been provided by the vendor as of the publication date. There are no known exploits in the wild at this time.

Impact

An unauthenticated attacker can bypass authentication mechanisms in affected versions of WP Event SOlution, potentially gaining unauthorized access to limited confidential information and modifying data integrity. There is no reported impact on availability. The medium CVSS score reflects these limited but significant impacts.

Summary

CVE-2026-66451 describes an unauthenticated broken authentication vulnerability in WP Event SOlution versions <=4.1.9. The issue allows attackers to bypass authentication controls by exploiting an alternate path or channel, categorized under CWE-288. The vulnerability has a CVSS 3.1 score of 6.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N), indicating network attack vector, low attack complexity, no privileges or user interaction required, and impacts limited confidentiality and integrity. No vendor advisory or patch is currently available, and no known exploitation has been reported.

CWE-288Authentication Bypass Using an Alternate Path or Channel (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product requires authentication, but the product has an alternate path or channel that does not require authentication.
Architecture and Design
Funnel all access through a single choke point to simplify how users can access a resource. For every access, perform a check to determine if the user has permissions to access the resource.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V1.2.3 (opens in a new tab)
V1.2.2 (opens in a new tab)
V1.2.4 (opens in a new tab)
Attack patterns
Directory Indexing (opens in a new tab)
Exploitation of Thunderbolt Protection Flaws (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

patchstack.com/database/wordpress/plugin/wp-event-solution/vulnerability/wordpress-wp-event-solution-plugin-4-1-9-broken-authentication-vulnerability?_s_id=cve (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 13 Aug 2026, 17:12 UTC

WeaknessesCWE-288

Technical details

References

Community reviews

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