CVE-2020-7659: Celluloid Reel

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

reel through 0.6.1 allows Request Smuggling attacks due to incorrect Content-Length and Transfer encoding header parsing. It is possible to conduct HTTP request smuggling attacks by sending the Content-Length header twice. Furthermore, invalid Transfer Encoding headers were found to be parsed as valid which could be leveraged for TE:CL smuggling attacks. Note: This project is deprecated, and is not maintained any more.

Affected products

• Celluloid Reel: up to and including 0.6.1

Published 2020-06-01. Last modified 2026-06-17.