There is 1 open security issue in bullseye.
1 important issue:
- CVE-2026-40561:
Starlet versions through 0.31 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Starlet incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.
![[bug history graph]](https://qa.debian.org/data/bts/graphs/s/starlet.png){kind=link}