CVE-2023-0567

Name: CVE-2023-0567
Creator: NVD / NIST
Published: 2023-03-01T08:15:11.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.2/10EPSS 0.94%

Last modified Jun 17, 2026

CVE-2023-0567 is a medium-severity vulnerability rated 6.2/10 on the CVSS scale. 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.. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.2/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.94%

56.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Php	Php	>= 8.0.0, < 8.0.28
Php	Php	>= 8.1.0, < 8.1.16
Php	Php	>= 8.2.0, < 8.2.3

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/

Timeline

Published: Mar 1, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-0567?

How severe is CVE-2023-0567?

CVE-2023-0567 has a CVSS score of 6.2/10 (MEDIUM severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.

How do I fix CVE-2023-0567?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-0567?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST