CVE-2026-35536 PUBLISHED

Assigner: mitre
Reserved: 03.04.2026 Published: 03.04.2026 Updated: 03.04.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS Score: 7.2

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	tornadoweb
Product	Tornado
Versions	Default: unaffected affected from 0 to 6.5.5 (excl.)

References

https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7
https://github.com/tornadoweb/tornado/releases/tag/v6.5.5

Problem Types

CWE-159 Improper Handling of Invalid Use of Special Elements CWE