CVE-2026-35536

State: Published
Severity: 7.2 High
Published: Apr 3, 2026
Updated: Apr 3, 2026
Reserved: Apr 3, 2026

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.

Scores

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

Weaknesses

CWE-159 Improper Handling of Invalid Use of Special Elements

Affected Products

Product	Versions
Tornadotornadoweb	before 6.5.5Affected

References

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

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