Description
Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.
References (4)
Core 4
Core References
Exploit, Third Party Advisory x_refsource_misc
https://github.com/sinatra/sinatra/issues/1428
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0315
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:0212
Patch, Third Party Advisory x_refsource_misc
https://github.com/sinatra/sinatra/commit/12786867d6faaceaec62c7c2cb5b0e2dc074d71a
Scores
CVSS v3
6.1
EPSS
0.0040
EPSS Percentile
60.7%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Details
CWE
CWE-79
Status
published
Products (4)
redhat/cloudforms
4.6
redhat/cloudforms
4.7
rubygems/sinatra
2.0.0 - 2.0.2RubyGems
sinatrarb/sinatra
< 2.0.2
Published
May 31, 2018
Tracked Since
Feb 18, 2026