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Contact Form by Supsystic EUVDEUVD-2026-60794

| CVE-2026-73379 MEDIUM
Authentication Bypass Using an Alternate Path or Channel (CWE-288)
2026-08-18 Patchstack GHSA-pwm4-cfxp-wrgq
6.5
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
vuln.today AI
6.5 MEDIUM

Network-accessible WordPress plugin; unauthenticated per description and PR:N; partial read/write impact with no scope change or availability loss.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

Lifecycle Timeline

2
Analysis Generated
Aug 18, 2026 - 15:36 vuln.today
Patch available
Aug 18, 2026 - 15:02 EUVD

DescriptionCVE.org

Unauthenticated Bypass Vulnerability in Contact Form by Supsystic < 1.10.0 versions.

AnalysisAI

Unauthenticated authentication bypass in the Contact Form by Supsystic WordPress plugin (versions before 1.10.0) exposes restricted plugin functionality to any remote attacker without credentials. CWE-288 indicates the plugin fails to enforce authentication through an alternate path or channel, allowing unauthorized access to operations that should require valid user context. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify WordPress site with target plugin active
Delivery
Send unauthenticated HTTP request to plugin endpoint
Exploit
Bypass authentication check via alternate path (CWE-288)
Execution
Access restricted plugin functionality
Impact
Read or modify contact form data

Vulnerability AssessmentAI

Exploitation No authentication is required - the CVSS vector PR:N and the description 'Unauthenticated Bypass Vulnerability' confirm that exploitation is possible without any valid WordPress credentials. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 6.5 with vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N indicates medium severity with meaningful real-world risk: the flaw is trivially exploitable over the network with no credentials or user interaction, and yields partial read and write access. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated attacker discovers a WordPress site running Contact Form by Supsystic prior to 1.10.0 through passive recon (e.g., WPScan or HTTP response headers). The attacker sends a crafted HTTP request to a plugin endpoint that bypasses the intended authentication check via an alternate code path, gaining access to protected plugin operations such as reading submitted form entries or modifying plugin configuration. …
Remediation Update the Contact Form by Supsystic plugin to version 1.10.0 or later, which contains the vendor-released patch per the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/contact-form-by-supsystic/vulnerability/wordpress-contact-form-by-supsystic-plugin-1-10-0-bypass-vulnerability-vulnerability) and EUVD-2026-60794. … Detailed patch versions, workarounds, and compensating controls in full report.

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EUVD-2026-60794 vulnerability details – vuln.today

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