CVE-2024-3096

PHP function password_verify can erroneously return true when argument contains NUL

At a glance

Severity: MEDIUM 6.5
EPSS: EPSS 1.49 % · percentile 74 (2026-10-27)
State: PUBLISHED
Published: 2024-04-29
Updated: 2025-11-04
Assigner: php
NVD status: Modified

Description

In PHP version 8.1.* before 8.1.28, 8.2.* before 8.2.18, 8.3.* before 8.3.5, if a password stored with password_hash() starts with a null byte (\x00), testing a blank string as the password via password_verify() will incorrectly return true.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	php
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	NVD · security@php.net (Secondary)

Weaknesses (CWE)

CWE-20

European references

ENISA EUVD · EUVD-2024-31701
GCVE · GCVE-0-2024-3096

CERT-FR advisories

CERTFR-2024-AVI-0475 — Multiples vulnérabilités dans Tenable Security Center · cert.ssi.gouv.fr
CERTFR-2024-AVI-0300 — Multiples vulnérabilités dans PHP · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 8.1.0 < 8.1.28
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 8.2.0 < 8.2.18
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* ≥ 8.3.0 < 8.3.5
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Affected products

Product	Versions
PHP Group · PHP	affected 8.1.* < 8.1.28 ; affected 8.2.* < 8.2.18 ; affected 8.3.* < 8.3.5

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD