CVE-2020-11055

Cross-site Scripting in BookStack

CVSS 6.3 MEDIUMEPSS 0.8%CWE-79

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.3EPSS 0.8%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

07 May 2020Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected products

BookStackApp · BookStack

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

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