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TI-2020-16081 Aliases CVE-2020-26260

Server Side Request Forgery in BookStack

Priority LOW 30CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.00837 57th percentileScored 2026-11-07
Fix Fixed BookStack (BookStackApp): v0.30.5

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
bookstackappBookStackv0.7 to before v0.30.5v0.30.5Patch availableCNA
  • BookStack Vendorbookstackapp Affected v0.7 to before v0.30.5 Fixed in v0.30.5 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*before 0.30.5Vulnerablebookstackapp
  • cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:* Versions before 0.30.5 Vulnerable ·bookstackapp

Remediation

  • Fix · CNA BookStack (BookStackApp) Fixed in v0.30.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-26260

References

Advisory 3

  • TI-2021-02995 Improper Access Control in bookstackapp/bookstack CVSS 3.1CRITICAL 9.8
  • TI-2023-04263 Server-Side Request Forgery (SSRF) in bookstackapp/bookstack CVSS 3.1LOW 2.4
  • TI-2020-04312 Remote Code Execution Through Image Uploads in BookStack CVSS 3.1HIGH 8.8
  • TI-2020-16032 Cross-Site Scripting in BookStack CVSS 3.1HIGH 8.7
  • TI-2020-16031 Cross-Site Scripting in BookStack CVSS 3.1HIGH 8.7
  • TI-2023-05693 Book Stack v23.10.2 - LFR via Blind SSRF CVSS 3.1MEDIUM 6.5
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences