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.
                
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References
        History
                    Mon, 09 Dec 2024 21:15:00 +0000
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 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-06-19T17:02:13.846Z
Updated: 2024-12-09T21:04:14.605Z
Reserved: 2023-06-06T16:16:53.559Z
Link: CVE-2023-34461
 Vulnrichment
                        Vulnrichment
                    Updated: 2024-08-02T16:10:07.058Z
 NVD
                        NVD
                    Status : Modified
Published: 2023-06-19T18:15:09.763
Modified: 2024-11-21T08:07:18.210
Link: CVE-2023-34461
 Redhat
                        Redhat
                    No data.