CVE-2026-123535
LOW
INFO
Priority: 0.00
BB Relevance:
55/100
Published: 2026-11-08
Modified: 2026-11-12
First seen: 2026-11-08
Status: active
Attack Surface
Network
Low Complexity
No Auth
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
Passive
AT:
Present
VC:
Low
VI:
Low
VA:
None
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.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| tornadoweb | tornado | 0 < 6.6 |
| tornadoweb | tornado | 0 < 6.6 |
References & Advisories (2)
vendor-advisory
third-party-advisory