CVE-2020-26211: Bookstack Cross-site Scripting vulnerability

CVE-2020-26211 · Severity: low · CVSS 3.1 · Published 2022-05-24

Bookstack Cross-site Scripting vulnerability

Technologies: ssddanbrown/bookstack (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2020-26211 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-26211 being exploited in the wild.
How severe is CVE-2020-26211?
Low severity, with a CVSS score of 3.1, published 24 May 2022.
Which products and versions are affected?
ssddanbrown/bookstack (Packagist) ECOSYSTEM:introduced=0,fixed=0.30.4.
Is there a fix for CVE-2020-26211?
Yes. ssddanbrown/bookstack (Packagist): upgrade to 0.30.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-26211?
Check whether you run ssddanbrown/bookstack (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • ssddanbrown/bookstack (Packagist): upgrade to 0.30.4 or later
    composer require ssddanbrown/bookstack:^0.30.4

Affected products

  • ssddanbrown/bookstack (Packagist) ECOSYSTEM:introduced=0,fixed=0.30.4

Identifiers

  • CVE-2020-26211
  • GHSA-ch37-ch8w-cfrq

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