CVE-2023-0567
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.
Does this matter?
Lower severity and a low EPSS score (0.92%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.2 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.92% probability · 60th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-916
- Affected
- php/php
- Source
- security@php.net
EPSS 0.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugs.php.net/bug.php?id=81744Vendor Advisory
- https://github.com/php/php-src/security/advisories/GHSA-7fj2-8x79-rjf4Exploit, Vendor Advisory
- https://bugs.php.net/bug.php?id=81744Vendor Advisory
- https://github.com/php/php-src/security/advisories/GHSA-7fj2-8x79-rjf4Exploit, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20230331-0008/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.