8.7
HIGH
CVE-2020-26210
BookStack JavaScript Injection Vulnerability
Description

In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in version 0.30.4.

INFO

Published Date :

Nov. 3, 2020, 7:15 p.m.

Last Modified :

Nov. 16, 2020, 4:14 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.8

Exploitability Score :

2.3
Affected Products

The following products are affected by CVE-2020-26210 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-2020-26210.

URL Resource
https://bookstackapp.com/blog/beta-release-v0-30-4/ Exploit Patch Vendor Advisory
https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227 Patch Third Party Advisory
https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4 Third Party Advisory
https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h Exploit 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-2020-26210 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-26210 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]

    Nov. 16, 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:H/I:H/A:N
    Changed Reference Type https://bookstackapp.com/blog/beta-release-v0-30-4/ No Types Assigned https://bookstackapp.com/blog/beta-release-v0-30-4/ Exploit, Patch, Vendor Advisory
    Changed Reference Type https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227 No Types Assigned https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227 Patch, Third Party Advisory
    Changed Reference Type https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4 No Types Assigned https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4 Third Party Advisory
    Changed Reference Type https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h No Types Assigned https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h Exploit, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:* versions up to (excluding) 0.30.4
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-2020-26210 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-2020-26210 weaknesses.

Exploit Prediction

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

0.20 }} 0.03%

score

0.57664

percentile

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