Hi,

The following vulnerability was published for kore.

CVE-2026-121727[0]:
| Kore before 4.3.0 contains an integer underflow vulnerability in
| HTTP request body handling that allows unauthenticated attackers to
| bypass http_body_max by sending more body bytes than declared.
| Attackers can send oversized first segments over many concurrent
| POST, PUT or DELETE connections, wrapping content_length to grow
| buffers unbounded and exhaust worker memory.

https://github.com/jorisvink/kore/commit/1ff3c0f6f7973dc7fc8bf38369790ef2d8079b3b


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-121727
https://www.cve.org/CVERecord?id=CVE-2026-121727

Please adjust the affected versions in the BTS as needed.