CVE-2026-16608Public exploitNetwork attack vector

Unauthenticated log injection via exposed reusable nonce

Published Aug 8, 2026 · Updated Aug 8, 2026

Missing authorization in WP Chill Download Monitor before 5.2.6 allows remote attackers to inject arbitrary download log entries. The download-logging AJAX action accepts attacker-supplied download and version identifiers after an unauthenticated visitor obtains its reusable nonce from the X-DLM-Nonce response header. An active plugin with at least one download and file version is required, and repeated requests falsify reports and cached download counts.

CVSS severity5.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in WP Chill Download Monitor before 5.2.6 allows remote attackers to inject arbitrary download log entries. The download-logging AJAX action accepts attacker-supplied download and version identifiers after an unauthenticated visitor obtains its reusable nonce from the X-DLM-Nonce response header. An active plugin with at least one download and file version is required, and repeated requests falsify reports and cached download counts.

The record

CVE
CVE-2026-16608
Published
Aug 8, 2026
Updated
Aug 8, 2026
Vendor
WP Chill
Product
Download Monitor
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 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=0 <5.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WP Chill · Download Monitorversion=0 <5.2.6

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

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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 exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

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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