Description
In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.
References (2)
Core 2
Scores
CVSS v3
7.2
EPSS
0.0002
EPSS Percentile
4.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-159
Status
published
Products (3)
pypi/tornado
0 - 6.5.5PyPI
tornadoweb/Tornado
< 6.5.5
tornadoweb/tornado
< 6.5.5
Published
Apr 03, 2026
Tracked Since
Apr 03, 2026