CVE-2026-3634
mediumA flaw was found in libsoup.
Vendor / product: Gnome — libsoup
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.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-03-17 10:16
Modified: 2026-11-05 21:18
NVD status: Analyzed
Last synced 2 hours ago
Verified against the source API 2026-11-05 21:23 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
gnome / libsoup all versions
redhat / enterprise_linux 6.0, 7.0, 8.0, 9.0, 10.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-3634
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2445129
Vendor advisory: https://gitlab.gnome.org/GNOME/libsoup/-/issues/485
Vendor advisory: https://gitlab.gnome.org/GNOME/libsoup/-/issues/485
References
- https://access.redhat.com/security/cve/CVE-2026-3634 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2445129 secalert@redhat.com
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/485 secalert@redhat.com
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/485 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-11-05 21:23 UTC · record ↗