CVE-2026-35536 Details
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.
A cookie attribute injection vulnerability exists in Tornado versions prior to 6.5.5. The issue arises because the domain, path, and samesite arguments in the .RequestHandler.set_cookie method were not properly validated, allowing crafted characters to be injected. This could be exploited to manipulate other attributes of the cookie.
Users can upgrade to Tornado version 6.5.5 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/tornadoweb/tornado/releases/tag/v6.5.5 | [email protected] | Product |
| https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-159 | Improper Handling of Invalid Use of Special Elements | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tornadoweb tornado | < 6.5.5 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 10, 2026 | Initial Analysis | [email protected] |
| Apr 3, 2026 | New CVE Received | [email protected] |