CVE-2023-0567

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    CVE-2023-0567

    Published: 16 Feb 2023Last Modified: 21 Oct 2026

    Summary: password_verify() always returns true for some invalid hashes

    Details: 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.

    References: https://bugs.php.net/bug.php?id=81744, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/0xxx/CVE-2023-0567.json, https://github.com/php/php-src/security/advisories/GHSA-7fj2-8x79-rjf4, https://nvd.nist.gov/vuln/detail/CVE-2023-0567, https://security.netapp.com/advisory/ntap-20230331-0008/, https://github.com/php/php-src

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 5dc92c2117cafc61daaaaa240fd46c3ac33872a4
    Fixed -12b5ba0b1d87d2dfdb4ee213cb5d122c921f3f2f

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High