CVE-2020-26260
6.4 · MEDIUMOverview
CVE-2020-26260 is a medium-severity vulnerability affecting bookstackapp bookstack. It was published on December 9, 2020 and has a CVSS 3.1 base score of 6.4 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
BookStack is a platform for storing and organising information and documentation. In BookStack before version 0.30.5, a user with permissions to edit a page could set certain image URL's to manipulate functionality in the exporting system, which would allow them to make server side requests and/or have access to a wider scope of files within the BookStack file storage locations. The issue was addressed in BookStack v0.30.5. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade.
Remediation
Check the references section for vendor advisories and patches from bookstackapp. Update bookstack to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| bookstackapp | bookstack | >= 0, < 0.30.5 | Affected |
References
Frequently Asked Questions
What is CVE-2020-26260?
CVE-2020-26260 is a medium-severity vulnerability affecting bookstackapp bookstack. It was published on December 9, 2020 and has a CVSS 3.1 base score of 6.4 (MEDIUM).
How severe is CVE-2020-26260?
This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-26260?
Check the references section for vendor advisories and patches from bookstackapp. Update bookstack to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-26260?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-26260 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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