CVE-2021-23592

Deserialization of Untrusted Data

7.7 HighFix available

The package topthink/framework before 6.0.12 are vulnerable to Deserialization of Untrusted Data due to insecure unserialize method in the Driver class.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: Low

Exploit likelihood

1.76%Up 0.9 points since May 8, 2022

What each source reports

CVE List Score used 7.7

Deserialization of Untrusted Data

The package topthink/framework before 6.0.12 are vulnerable to Deserialization of Untrusted Data due to insecure unserialize method in the Driver class.

Record: CVE-2021-23592
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L/E:P
Updated: 2026-11-02

EUVDEUVD-2022-2172 7.7

The package topthink/framework before 6.0.12 are vulnerable to Deserialization of Untrusted Data due to insecure unserialize method in the Driver class.

Record: EUVD-2022-2172
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L/E:P
Updated: 2026-11-03

GitHub AdvisoriesGHSA-3fpv-54ff-wqfj 9.8

Deserialization of Untrusted Data in topthink/framework

The package topthink/framework before version 6.0.12 is vulnerable to Deserialization of Untrusted Data due to insecure unserialize method in the Driver class.

Record: GHSA-3fpv-54ff-wqfj
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

NVD 7.7

The package topthink/framework before 6.0.12 are vulnerable to Deserialization of Untrusted Data due to insecure unserialize method in the Driver class.

Record: CVE-2021-23592
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-502
Updated: 2026-11-02

OSV 9.8

The package topthink/framework before 6.0.12 are vulnerable to Deserialization of Untrusted Data due to insecure unserialize method in the Driver class.

Record: CVE-2021-23592
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-3fpv-54ff-wqfj 9.8

Deserialization of Untrusted Data in topthink/framework

The package topthink/framework before version 6.0.12 is vulnerable to Deserialization of Untrusted Data due to insecure unserialize method in the Driver class.

Record: GHSA-3fpv-54ff-wqfj
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

Affected products

thinkphp

Affected packages

Affected packages
Package	Affected	Fixed
`topthink/framework` Packagist	before 6.0.12	6.0.12
`topthink/framework` Packagist	before 6.0.12, plus listed versions 5.05.0-rc15.0-rc25.0-rc35.0-rc4 Show 45 moreShow less v5.0.1v5.0.10v5.0.11v5.0.12v5.0.13v5.0.14v5.0.15v5.0.16v5.0.17v5.0.18v5.0.19v5.0.2v5.0.20v5.0.21v5.0.22v5.0.23v5.0.24v5.0.25v5.0.3v5.0.4v5.0.5v5.0.6v5.0.7v5.0.8v5.0.9v5.1-beta.1v5.1-rc.1v5.1-rc.2v5.1-rc.3v5.1.0v5.1.1v5.1.10v5.1.11v5.1.12v5.1.13v5.1.14v5.1.15v5.1.16v5.1.17v5.1.18v5.1.19v5.1.2v5.1.20v5.1.21v5.1.22	6.0.12

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-23592 is a high vulnerability (CVSS 7.7) in Thinkphp, published May 6, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.76%, the 78th percentile. Fixed in topthink/framework 6.0.12.

References

This page doesn't list everything

Left out here: 48 versions. The JSON record has them.