PYSEC-2026-2287

At a glance

Published: 2026-04-03 04:16 UTC
Updated: 2026-07-13 16:45 UTC
CVE: CVE-2026-35536
Aliases: GHSA-78cv-mqj4-43f7, GHSA-fqwm-6jpj-5wxc
CVSS_V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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 packages

Package	Versions
PyPI · tornado	introduced 0, fixed 6.5.5

References

https://github.com/tornadoweb/tornado/releases/tag/v6.5.5 WEB
https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7 ADVISORY
https://github.com/advisories/GHSA-fqwm-6jpj-5wxc ADVISORY

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — PyPA Advisory Database