CVE-2022-31625Network attack vector

Code execution via freeing uninitialized query parameters

Published Jun 16, 2022 · Updated Sep 16, 2024

Invalid free in PHP 7.4.x before 7.4.30, 8.0.x before 8.0.20, and 8.1.x before 8.1.7 allows remote attackers to execute code or crash PHP. Parameter-conversion failure in pg_query_params() and pg_send_execute() passes the full parameter count to _php_pgsql_free_params(), causing it to free uninitialized pointer entries beyond those already initialized. Exploitation requires the PostgreSQL extension and an application path that supplies attacker-controlled, nonconvertible query parameters; successful abuse grants process-level code execution or interrupts the PHP service.

CVSS severity8.1
High
EPSS probability3.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid free in PHP 7.4.x before 7.4.30, 8.0.x before 8.0.20, and 8.1.x before 8.1.7 allows remote attackers to execute code or crash PHP. Parameter-conversion failure in pg_query_params() and pg_send_execute() passes the full parameter count to _php_pgsql_free_params(), causing it to free uninitialized pointer entries beyond those already initialized. Exploitation requires the PostgreSQL extension and an application path that supplies attacker-controlled, nonconvertible query parameters; successful abuse grants process-level code execution or interrupts the PHP service.

The record

CVE
CVE-2022-31625
Published
Jun 16, 2022
Updated
Sep 16, 2024
Vendor
The PHP Group
Product
PHP
Classifications
CWE-824, CWE-590, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record 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=7.4.X <7.4.30
  2. Affected versionversion=8.0.X <8.0.20
  3. Affected versionversion=8.1.X <8.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The PHP Group · PHPversion=7.4.X <7.4.30; version=8.0.X <8.0.20; version=8.1.X <8.1.7

Published CVSS scores

8.1PHP GroupCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1NIST NVDCVSS:3.1/AV:N/AC:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer
CWE-590Free of Memory not on the Heap
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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