CVE
CVE-2026-35536
Tornado has cookie attribute injection via .RequestHandler.set_cookie
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.
Package Versions Affected
Package Version
patch Availability
No items found.
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CVSS Version
Severity
Base Score
CVSS Version
Score Vector

C
H
U
7.2
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

C
H
U
7.2
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Related Resources
No items found.
References
https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7, https://nvd.nist.gov/vuln/detail/CVE-2026-35536, https://github.com/tornadoweb/tornado, https://github.com/tornadoweb/tornado/releases/tag/v6.5.5
