cvedb.io
CVE-2023-34461
MEDIUM · CVSS 4.6
EPSS exploitation probability: 0%
Published 2023-06-19T18:15:09.763 · Last modified 2026-06-17T06:03:41.980

Summary

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 Jinj

Affected products

pybb_project — pybb

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.