5.4
MEDIUM CVSS 3.1
CVE-2023-34461
PyBB Cross-Site Scripting (XSS) Vuln
Description

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.

INFO

Published Date :

June 19, 2023, 6:15 p.m.

Last Modified :

Nov. 21, 2024, 8:07 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2023-34461 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Pybb_project pybb
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-34461.

URL Resource
https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854 Patch
https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p Mitigation Patch Third Party Advisory
https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854 Patch
https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p Mitigation Patch Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-34461 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-34461 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-34461 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-34461 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854
    Added Reference https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jun. 27, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854 No Types Assigned https://github.com/benjjvi/PyBB/commit/5defd922ab05a193a783392d447c6538628cf854 Patch
    Changed Reference Type https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p No Types Assigned https://github.com/benjjvi/PyBB/security/advisories/GHSA-mv96-w49p-438p Mitigation, Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:pybb_project:pybb:0.1.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.4
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.09 }} -0.13%

score

0.27809

percentile