This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-78660 →

DEBIAN-CVE-2026-78660

Historically, we have been rather lax about malformed framing-related headers in our HTTP/2 implementation, as they cannot interfere with HTTP/2 frami...

Original description

The description as published by the source.

Historically, we have been rather lax about malformed framing-related headers in our HTTP/2 implementation, as they cannot interfere with HTTP/2 framing. However, this makes it possible for our HTTP/2 implementation to forward responses containing such headers to an HTTP/1 client when acting as a reverse proxy. If the HTTP/1 client also does not behave strictly enough, this can result in response smuggling.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 golang-1.19

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 golang-1.24

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 golang-1.26

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.9-1"}]}]

Debian:14 golang-1.27

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.27.2-1"}]}]

Debian:12 golang-golang-x-net

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 golang-golang-x-net

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 golang-golang-x-net

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.60.0-1"}]}]

References

advisory security-tracker.debian.org