CVE-2023-0567

High

Open

TLP:CLEAR

password_verify() always returns true for some invalid hashes

NVD CVE.org

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Description

In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, password_verify() function may accept some invalid Blowfish hashes as valid. If such invalid hash ever ends up in the password database, it may lead to an application allowing any password for this entry as valid.

Details

CVSS Score: 7.7
EPSS Score ⓘ: 0.95%

58th percentile
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Confidence: 90%
Published: Feb 16, 2023
Last Modified: Jul 19, 2026

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