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Kadence Starter Templates CVE-2026-73997

| EUVDEUVD-2026-60811 HIGH
Allocation of Resources Without Limits or Throttling (CWE-770)
2026-08-18 Patchstack GHSA-4pmh-h6pj-3wh3
7.5
CVSS 3.1 · Vendor: Patchstack
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Severity by source

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

Network-reachable unauthenticated endpoint with no complexity barrier; impact is availability-only with no scope change.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Aug 18, 2026 - 14:52 vuln.today
CVE Published
Aug 18, 2026 - 14:00 cve.org
HIGH 7.5

DescriptionCVE.org

Unauthenticated Denial of Service Attack in Starter Templates by Kadence WP <= 2.3.3 versions.

AnalysisAI

Unauthenticated denial of service in the Starter Templates by Kadence WP WordPress plugin (versions <= 2.3.3) allows remote attackers to exhaust server resources and render affected WordPress sites unavailable without any credentials. The vulnerability stems from CWE-770, meaning the plugin fails to apply rate limits or resource quotas on one or more of its endpoints, enabling trivial amplification by an unauthenticated adversary. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify WordPress site with Kadence plugin active
Delivery
Send unauthenticated HTTP requests to vulnerable endpoint
Exploit
Trigger unbounded server-side resource allocation
Execution
Exhaust PHP/web server process pool
Impact
WordPress site becomes unavailable to legitimate users

Vulnerability AssessmentAI

Exploitation No special conditions are required for exploitation - the CVSS vector AV:N/AC:L/PR:N/UI:N confirms unauthenticated remote exploitation against any WordPress site running the Starter Templates by Kadence WP plugin in versions <= 2.3.3 with default configuration. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) is consistent with the threat model: the attack is trivially executable from the internet with no credentials, no user interaction, and low complexity, resulting in complete availability loss of the affected WordPress instance. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker sends a high volume of unauthenticated HTTP requests to the vulnerable plugin endpoint, each triggering unbounded server-side resource allocation - such as large in-memory operations, database queries, or file processing - causing the web server or PHP process pool to exhaust available resources and deny service to legitimate visitors. No exploit code is known to be publicly available at time of analysis, but the attack requires only a basic HTTP client and knowledge of the targeted endpoint, making it accessible to low-sophistication adversaries.
Remediation The primary remediation is to update the Starter Templates by Kadence WP plugin beyond version 2.3.3 to whatever release addresses this vulnerability; consult the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/kadence-starter-templates/vulnerability/wordpress-starter-templates-by-kadence-wp-plugin-2-3-3-denial-of-service-attack-vulnerability for the confirmed fixed version, as one was not enumerated in available data. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: audit all WordPress installations for Kadence Starter Templates plugin presence and version; if present, immediately assess whether the plugin is business-critical or can be disabled as a temporary measure. …

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CVE-2026-73997 vulnerability details – vuln.today

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