CVE-2024-44902Public exploitNetwork attack vector

Unauthenticated code execution via deserialization gadget chain

Published Sep 9, 2024 · Updated Jul 5, 2026

Deserialization in ThinkPHP 6.1.3 through 8.0.4 allows remote attackers to execute arbitrary code through attacker-controlled PHP objects. The proof of concept passes a serialized ResourceRegister object to PHP unserialize, chaining DbManager, Memcached, Pivot, and Model behavior into a system call. Exploitation requires an application-defined unsafe deserialization endpoint and the Memcached extension; ThinkPHP does not create the demonstrated endpoint by default.

CVSS severity9.8
Critical
EPSS probability4.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in ThinkPHP 6.1.3 through 8.0.4 allows remote attackers to execute arbitrary code through attacker-controlled PHP objects. The proof of concept passes a serialized ResourceRegister object to PHP unserialize, chaining DbManager, Memcached, Pivot, and Model behavior into a system call. Exploitation requires an application-defined unsafe deserialization endpoint and the Memcached extension; ThinkPHP does not create the demonstrated endpoint by default.

The record

CVE
CVE-2024-44902
Published
Sep 9, 2024
Updated
Jul 5, 2026
Vendor
ThinkPHP
Product
ThinkPHP
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 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=6.1.3 <8.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ThinkPHP · ThinkPHPversion=6.1.3 <8.0.4

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

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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