CRITICAL 9.0 NVD
CVE-2023-54397
Tornado before 6.3.3 contains an HTTP request smuggling vulnerability due to improper parsing of Content-Length headers accepting non-standard characters. Attac
Tornado before 6.3.3 contains an HTTP request smuggling vulnerability due to improper parsing of Content-Length headers accepting non-standard characters. Attackers can send crafted HTTP requests with these characters to bypass proxy validation and smuggle requests when deployed behind certain proxies.
References
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-qppv-j76h-2rpx
- https://www.vulncheck.com/advisories/tornado-before-6.3.3-http-request-smuggling-via-conte
This critical severity vulnerability with a CVSS score of 9.0 was published on 2026-09-15 via NVD.
Risk Timeline
CVE Disclosed2026-09-15 · -1 days ago
Remediation Resources
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