Medium severity · published Sep 6, 2021
CVE-2021-3768
bookstack is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
5.4
CVSS
0.6%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BO
Bookstack · Bookstackapp
before 21.08.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3768
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3768
Patch
https://github.com/bookstackapp/bookstack/commit/5e6092aaf8fd420202016038286554860bf8ea64
Exploit
https://huntr.dev/bounties/64a0229f-ff5e-4c64-b83e-9bfc0698a78e
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