CVE-2026-64873Network attack vector

Unauthenticated internal service access via custom query URLs

Published Jul 23, 2026 · Updated Jul 23, 2026

Server-side request forgery in Regular Labs Cache Cleaner Pro 9.7.6 and earlier allows remote attackers to reach internal services. The Pro-only custom query URL feature sends its configured URL after cache cleaning without blocking private or reserved destinations. The feature must be configured and a cache-clean event must occur; resulting requests are limited to services reachable from the Joomla host.

CVSS severity9.8
Critical
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in Regular Labs Cache Cleaner Pro 9.7.6 and earlier allows remote attackers to reach internal services. The Pro-only custom query URL feature sends its configured URL after cache cleaning without blocking private or reserved destinations. The feature must be configured and a cache-clean event must occur; resulting requests are limited to services reachable from the Joomla host.

The record

CVE
CVE-2026-64873
Published
Jul 23, 2026
Updated
Jul 23, 2026
Vendor
Regular Labs
Product
Cache Cleaner Pro
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 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=1.0.0-9.7.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Regular Labs · Cache Cleaner Proversion=1.0.0-9.7.6

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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