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CVE-2023-34461— Cross-site Scripting (XSS) Availability in PyBB

Quick assessment

Affected
benjjvi PyBB
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PyBB是英国Ben个人开发者的一个开源公告板。 PyBB 0.1.0版本存在跨站脚本漏洞，该漏洞源于存在跨站脚本漏洞，允许攻击者在客户端运行恶意JavaScript代码。

CVSS 4.6 · Medium EPSS 0.34% · P26
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I. Basic Information for CVE-2023-34461

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) Availability in PyBB
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
PyBB 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PyBB是英国Ben个人开发者的一个开源公告板。 PyBB 0.1.0版本存在跨站脚本漏洞，该漏洞源于存在跨站脚本漏洞，允许攻击者在客户端运行恶意JavaScript代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
benjjvi PyBB < 0.1.1 -

II. Public POCs for CVE-2023-34461

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III. Intelligence Information for CVE-2023-34461

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Patches & Fixes for CVE-2023-34461 (1)

Vendor Advisories for CVE-2023-34461 (1)

IV. Related Vulnerabilities

Same product: PyBB
Same vendor: benjjvi
Same weakness: CWE-79

V. Comments for CVE-2023-34461

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