CVE-2026-73997Network attack vector

Service interrupt via image processing REST API

Published Aug 18, 2026 · Updated Aug 18, 2026

Denial of service in Nexcess Kadence Starter Templates 2.3.3 and earlier allows remote attackers to interrupt service via REST API requests. Public records only narrow the flaw to the plugin's image processing REST API module; the vendor has not disclosed which endpoint mishandles unauthenticated input or what operation exhausts resources. No authentication or user interaction is required, and the published scoring bounds the consequence to availability impact rather than data access or code execution.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Nexcess Kadence Starter Templates 2.3.3 and earlier allows remote attackers to interrupt service via REST API requests. Public records only narrow the flaw to the plugin's image processing REST API module; the vendor has not disclosed which endpoint mishandles unauthenticated input or what operation exhausts resources. No authentication or user interaction is required, and the published scoring bounds the consequence to availability impact rather than data access or code execution.

The record

CVE
CVE-2026-73997
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
The Events Calendar
Product
Kadence Starter Templates
Classifications
CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=2.3.3 changes=[{"at":"2.3.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Events Calendar · Kadence Starter Templatesversion=n/a <=2.3.3 changes=[{"at":"2.3.4","status":"unaffected"}]

Published CVSS scores

7.5PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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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