6.3
MEDIUM
CVE-2020-11055
BookStack Cross-site Scripting (XSS) Vulnerability
Description

In BookStack greater than or equal to 0.18.0 and less than 0.29.2, there is an XSS vulnerability in comment creation. A user with permission to create comments could POST HTML directly to the system to be saved in a comment, which would then be executed/displayed to others users viewing the comment. Through this vulnerability custom JavaScript code could be injected and therefore ran on other user machines. This most impacts scenarios where not-trusted users are given permission to create comments. This has been fixed in 0.29.2.

INFO

Published Date :

May 7, 2020, 9:15 p.m.

Last Modified :

May 13, 2020, 5:30 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2020-11055 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 Bookstackapp bookstack
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-2020-11055.

URL Resource
http://jvn.jp/en/jp/JVN41035278/index.html Third Party Advisory
https://bookstackapp.com/blog/beta-release-v0-29-2/ Release Notes Vendor Advisory
https://github.com/BookStackApp/BookStack/releases/tag/v0.29.2 Release Notes
https://github.com/BookStackApp/BookStack/security/advisories/GHSA-5vf7-q87h-pg6w Third Party Advisory

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-2020-11055 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-11055 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 [email protected]

    May. 14, 2024

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

    May. 13, 2020

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type http://jvn.jp/en/jp/JVN41035278/index.html No Types Assigned http://jvn.jp/en/jp/JVN41035278/index.html Third Party Advisory
    Changed Reference Type https://bookstackapp.com/blog/beta-release-v0-29-2/ No Types Assigned https://bookstackapp.com/blog/beta-release-v0-29-2/ Release Notes, Vendor Advisory
    Changed Reference Type https://github.com/BookStackApp/BookStack/releases/tag/v0.29.2 No Types Assigned https://github.com/BookStackApp/BookStack/releases/tag/v0.29.2 Release Notes
    Changed Reference Type https://github.com/BookStackApp/BookStack/security/advisories/GHSA-5vf7-q87h-pg6w No Types Assigned https://github.com/BookStackApp/BookStack/security/advisories/GHSA-5vf7-q87h-pg6w Third Party Advisory
    Added CWE NIST CWE-79
    Added CPE Configuration OR *cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:* versions from (including) 0.18.0 up to (excluding) 0.29.2
  • CVE Modified by [email protected]

    May. 13, 2020

    Action Type Old Value New Value
    Added Reference http://jvn.jp/en/jp/JVN41035278/index.html [No Types Assigned]
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.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-11055 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-2020-11055 weaknesses.

Exploit Prediction

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

0.08 }} 0.00%

score

0.32446

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability