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CVE-2020-26210

HIGH
Published 2020-11-03T18:20:15
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CVSS Score

V3.1
7.7
/10
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.004
probability
of exploitation in the wild

There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.617
Higher than 61.7% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

BookStackApp

BookStack

Affected Versions:

< 0.30.4

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-vmfp-7cw6-345x

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

References

WEB https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-26210
WEB https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227
WEB https://bookstackapp.com/blog/beta-release-v0-30-4
WEB https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: May 24, 2022

References

https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h
https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227
https://bookstackapp.com/blog/beta-release-v0-30-4/
https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4
Published: 2020-11-03T18:20:15
Last Modified: 2024-08-04T15:49:07.224Z
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