What is CVE-2023-0662?

CVE-2023-0662 is a high-severity vulnerability in PHP, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-02-16.

How severe is CVE-2023-0662?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-0662 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in PHP

CVE-2023-0662

In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, excessive number of parts in HTTP form upload can cause high resource consumption and excessive number of log entries. This can cause denial of service on the affected server by exhausting CPU resources or disk space.

Vulnerability class: DoS (Denial of Service)

Published 2023-02-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.5th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

PHP
PHP Group — versions 8.0.x, 8.1.x, 8.2.x

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

github.com/php/php-src/security/advisories/GHSA-54hq-v5wp-fqgv (Third Party Advisory)
security.netapp.com/advisory/ntap-20230517-0001/

Frequently asked questions

What is CVE-2023-0662?: CVE-2023-0662 is a high-severity vulnerability in PHP, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-02-16.
How severe is CVE-2023-0662?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-0662 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.