phpBB before 3.3.16 is vulnerable to Host Header Injection that can lead to password rest link poisoning. When force_server_vars is disabled, the servers hostname may be extracted from the HTTP Host header which is used to generate the password reset link URL. An attacker who can manipulate the Host header (e.g. through misconfigured host setup or missing header validation by the webserver) can cause password reset emails to contain a link pointing to an attacker-controlled domain, potentially leading to account takeover.
CVSS Score
8.1
EPSS Score
0.0
Published
2026-05-04
Cross Site Request Forgery vulnerability in Phpbb phbb3 v.3.3.15 allows a local attacker to execute arbitrary code via the login function and the authentication mechanism
CVSS Score
8.8
EPSS Score
0.001
Published
2026-04-09
Cross Site Request Forgery vulnerability in Phpbb phbb3 v.3.3.15 allows a local attacker to execute arbitrary code via the Admin Control Panel icon management functionality.
CVSS Score
4.3
EPSS Score
0.0
Published
2026-04-09
A vulnerability, which was classified as problematic, has been found in phpBB up to 3.3.10. This issue affects the function main of the file phpBB/includes/acp/acp_icons.php of the component Smiley Pack Handler. The manipulation of the argument pak leads to cross site scripting. The attack may be initiated remotely. Upgrading to version 3.3.11 is able to address this issue. The patch is named ccf6e6c255d38692d72fcb613b113e6eaa240aac. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-244307.
CVSS Score
2.4
EPSS Score
0.001
Published
2023-11-02
A vulnerability exists in phpBB <v3.2.10 and <v3.3.1 which allowed remote image dimensions check to be used to SSRF.
CVSS Score
5.8
EPSS Score
0.002
Published
2020-08-17
phpBB 3.2.7 allows adding an arbitrary Cascading Style Sheets (CSS) token sequence to a page through BBCode.
CVSS Score
7.5
EPSS Score
0.003
Published
2020-03-20
Missing form token validation in phpBB 3.2.7 allows CSRF in deleting post attachments.
CVSS Score
4.3
EPSS Score
0.001
Published
2020-03-11
phpBB 3.2.8 allows a CSRF attack that can modify a group avatar.
CVSS Score
4.3
EPSS Score
0.001
Published
2020-01-15
phpBB 3.2.8 allows a CSRF attack that can approve pending group memberships.
CVSS Score
6.5
EPSS Score
0.001
Published
2020-01-15
phpbb 3.0.x-3.0.6 has an XSS vulnerability via the [flash] BB tag.
CVSS Score
6.1
EPSS Score
0.003
Published
2019-11-14
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