PyBB is an open source bulletin board. A manual code review of the PyBB bulletin board server has revealed that a vulnerability could have been exploited in which users could submit any type of HTML tag, and have said tag run. For example, a malicious `<a>` that looks like ```<a href=javascript:alert (1)>xss</a>``` could have been used to run code through JavaScript on the client side. The problem has been patched as of commit `5defd92`, and users are advised to upgrade. Attackers do need posting privilege in order to exploit this vulnerability. This vulnerability is present within the 0.1.0 release, and users are advised to upgrade to 0.1.1. Users unable to upgrade may be able to work around the attack by either; Removing the ability to create posts, removing the `|safe` tag from the Jinja2 template titled "post.html" in templates or by adding manual validation of links in the post creation section.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-06-19T17:02:13.846Z

Updated: 2024-08-02T16:10:07.058Z

Reserved: 2023-06-06T16:16:53.559Z

Link: CVE-2023-34461

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-06-19T18:15:09.763

Modified: 2023-06-27T17:09:46.680

Link: CVE-2023-34461

cve-icon Redhat

No data.