CVE-2026-73364Network attack vector

Site compromise via crafted object injection

Published Aug 19, 2026 · Updated Aug 19, 2026

PHP object injection in WP Desk Flexible Subscriptions before 1.8.2 allows attackers to compromise a WordPress site via crafted serialized input. Patchstack and the CVE record identify unsafe deserialization of customer-controlled data as the flaw, but the public advisory does not disclose the exact file, function, or request parameter that reaches unserialize or maybe_unserialize. Version 1.8.2 is listed as fixed; public records disagree on reachability, with Patchstack labeling the issue Customer-level while the published CVSS vector says no privileges and no user interaction are required.

CVSS severity9.8
Critical
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in WP Desk Flexible Subscriptions before 1.8.2 allows attackers to compromise a WordPress site via crafted serialized input. Patchstack and the CVE record identify unsafe deserialization of customer-controlled data as the flaw, but the public advisory does not disclose the exact file, function, or request parameter that reaches unserialize or maybe_unserialize. Version 1.8.2 is listed as fixed; public records disagree on reachability, with Patchstack labeling the issue Customer-level while the published CVSS vector says no privileges and no user interaction are required.

The record

CVE
CVE-2026-73364
Published
Aug 19, 2026
Updated
Aug 19, 2026
Vendor
WP Desk
Product
Flexible Subscriptions
Classifications
CWE-502
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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 <=1.8.1 changes=[{"at":"1.8.2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

WP Desk · Flexible Subscriptionsversion=n/a <=1.8.1 changes=[{"at":"1.8.2","status":"unaffected"}]

Published CVSS scores

9.8PatchstackCVSS: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.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data

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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