CVE-2026-123534
HIGH
MEDIUM
Priority: 0.03
BB Relevance:
77/100
Published: 2026-11-08
Modified: 2026-11-09
First seen: 2026-11-08
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
AT:
Present
VC:
Low
VI:
None
VA:
High
Description
Tornado before 6.6 contains a path traversal vulnerability in RequestHandler.static_url() and get_version() that allows attackers to hash files outside static_path using ../ sequences. Attackers controlling input passed to static_url() can obtain SHA-512 hashes of readable files to confirm their existence, or reference /dev/zero to block the event loop indefinitely.
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