CVE-2026-59544Network attack vector

Unauthenticated PHP object injection

Published Jul 23, 2026 · Updated Jul 23, 2026

PHP object injection in Thrive Quiz Builder 10.9.3.0 and earlier allows remote attackers to inject crafted objects without authentication. Patchstack has not published the vulnerable endpoint, parameter, or deserialization operation that accepts attacker-controlled data. No user interaction is required, but code execution or other effects require a suitable property-oriented programming chain.

CVSS severityUnavailable
Unscored
EPSS probability0.56%
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 Thrive Quiz Builder 10.9.3.0 and earlier allows remote attackers to inject crafted objects without authentication. Patchstack has not published the vulnerable endpoint, parameter, or deserialization operation that accepts attacker-controlled data. No user interaction is required, but code execution or other effects require a suitable property-oriented programming chain.

The record

CVE
CVE-2026-59544
Published
Jul 23, 2026
Updated
Jul 23, 2026
Vendor
Thrive Themes
Product
Thrive Quiz Builder
Classifications
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=n/a <=10.9.3.0 changes=[{"at":"10.9.3.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Thrive Themes · Thrive Quiz Builderversion=n/a <=10.9.3.0 changes=[{"at":"10.9.3.1","status":"unaffected"}]

Published CVSS scores

No CVSS assessment is available in this record.

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

T1190Exploit Public-Facing Application

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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