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OpenAdvisories
Low · 3.9 CVE-2026-3634 EUVD-2026-12561GHSA-jx6g-363c-pprr

Libsoup: libsoup: http header injection and response splitting via crlf injection in content-type header

Published Mar 17, 2026 · Updated Nov 5, 2026 · Assigned by redhat

Description

A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Enterprise Linux 10 — —
Red Hat Red Hat Enterprise Linux 6 — —
Red Hat Red Hat Enterprise Linux 7 — —
Red Hat Red Hat Enterprise Linux 8 — —
Red Hat Red Hat Enterprise Linux 9 — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 13 libsoup3 +1 No fix yet —
Debian 12 libsoup3 +1 No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 libsoup3 +1 No fix yet —
Ubuntu 26.04 LTS libsoup3 No fix yet —
Ubuntu 25.10 libsoup3 +1 No fix yet —
Ubuntu 24.04 LTS libsoup3 +1 No fix yet —
Ubuntu 22.04 LTS libsoup2.4 No fix yet —
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 26.04 LTS libsoup2.4 No fix yet —
Ubuntu Pro 22.04 LTS libsoup3 No fix yet —
Ubuntu Pro 20.04 LTS libsoup2.4 No fix yet —
Ubuntu Pro 18.04 LTS libsoup2.4 No fix yet —
Ubuntu Pro 16.04 LTS libsoup2.4 No fix yet —

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 libsoup No fix yet —

Advisories 1

References