Weak Password Recovery Mechanism for Forgotten Password Affecting phpbb/phpbb package, versions >=3.0.0, <3.3.16-RC1


Severity

Recommended
0.0
critical
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.03% (9th percentile)

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  • Snyk IDSNYK-PHP-PHPBBPHPBB-16416477
  • published4 May 2026
  • disclosed4 May 2026
  • creditSEONG HUN JEONG

Introduced: 4 May 2026

NewCVE-2026-29199  (opens in a new tab)
CWE-640  (opens in a new tab)

How to fix?

Upgrade phpbb/phpbb to version 3.3.16-RC1 or higher.

Overview

phpbb/phpbb is a Forum Software application.

Affected versions of this package are vulnerable to Weak Password Recovery Mechanism for Forgotten Password via the force_server_vars configuration being disabled. An attacker can cause password reset emails to contain links to attacker-controlled domains by manipulating the HTTP Host header. This is only exploitable if force_server_vars is disabled and the web server does not properly validate the Host header.

References

CVSS Base Scores

version 4.0
version 3.1