CVE-2023-34461

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:pybb_project:pybb:0.1.0:*:*:*:*:*:*:*

History

21 Nov 2024, 08:07

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 5.4
v2 : unknown
v3 : 4.6
References () https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854 - Patch () https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854 - Patch
References () https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p - Mitigation, Patch, Third Party Advisory () https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p - Mitigation, Patch, Third Party Advisory

27 Jun 2023, 17:09

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.4
CPE cpe:2.3:a:pybb_project:pybb:0.1.0:*:*:*:*:*:*:*
References (MISC) https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p - (MISC) https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p - Mitigation, Patch, Third Party Advisory
References (MISC) https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854 - (MISC) https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854 - Patch

19 Jun 2023, 18:15

Type Values Removed Values Added
New CVE

Information

Published : 2023-06-19 18:15

Updated : 2024-11-21 08:07


NVD link : CVE-2023-34461

Mitre link : CVE-2023-34461

CVE.ORG link : CVE-2023-34461


JSON object : View

Products Affected

pybb_project

  • pybb
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')