CVE-2026-123535 | BDVDB-2026-401892 Detail

Description#

Tornado before 6.6 does not validate the max_age argument of RequestHandler.set_cookie (also called by set_signed_cookie, set_secure_cookie, and clear_cookie), allowing injection of additional Set-Cookie attributes. When an application passes attacker-influenced input as max_age, an attacker can embed attributes such as Domain, Path, or Secure to widen the cookie's scope to parent paths or other subdomains.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-11-08Record published in the CVE List.