HIGH 8.3 NVD
CVE-2026-123534
Tornado before 6.6 contains a path traversal vulnerability in RequestHandler.static_url() and get_version() that allows attackers to hash files outside static_p
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.
References
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-v8g8-cp5j-42fg
- https://www.vulncheck.com/advisories/tornado-before-6.6-path-traversal-via-static-url-vers
This high severity vulnerability with a CVSS score of 8.3 was published on 2026-11-08 via NVD.
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