CVE-2020-11055

Summary

In BookStack greater than or equal to 0.18.0 and less than 0.29.2, there is an XSS vulnerability in comment creation. A user with permission to create comments could POST HTML directly to the system to be saved in a comment, which would then be executed/displayed to others users viewing the comment. Through this vulnerability custom JavaScript code could be injected and therefore ran on other user machines. This most impacts scenarios where not-trusted users are given permission to create comments. This has been fixed in 0.29.2.

Affected Software

Weaknesses

• CWE-79: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/BookStackApp/BookStack/security/advisories/GHSA-5vf7-q87h-pg6w
• https://bookstackapp.com/blog/beta-release-v0-29-2/
• https://github.com/BookStackApp/BookStack/releases/tag/v0.29.2
• http://jvn.jp/en/jp/JVN41035278/index.html

References

• https://github.com/BookStackApp/BookStack/security/advisories/GHSA-5vf7-q87h-pg6w
• https://bookstackapp.com/blog/beta-release-v0-29-2/
• https://github.com/BookStackApp/BookStack/releases/tag/v0.29.2
• http://jvn.jp/en/jp/JVN41035278/index.html

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