# CVE-2026-35536

## Summary

- **CVE ID:** CVE-2026-35536
- **Severity:** HIGH
- **CVSS Score:** 7.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N)
- **CWE:** CWE-159
- **Published:** Apr 3, 2026
- **Last Modified:** 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.

## Affected Products

- tornadoweb — Tornado (0)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 14.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._