CVE detail
CVE-2026-3634
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 16.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 1
- within the 30d window
- Peak daily
- 1
- highest bucket
Evidence
Source links by recency
4 source links · newest first
- CVE-2026-3634 Libsoup: libsoup: http header injection and response splitting via crlf injection in content-type headerMicrosoft MSRC
Information published.
vendormsrc.microsoft.comJun 28, 2026, 9:01 AM - https://gitlab.gnome.org/GNOME/libsoup/-/issues/485gitlab.gnome.org
No excerpt available.
Exploitgitlab.gnome.orgMar 17, 2026, 10:16 AM - https://bugzilla.redhat.com/show_bug.cgi?id=2445129bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comMar 17, 2026, 10:16 AM - https://access.redhat.com/security/cve/CVE-2026-3634access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 17, 2026, 10:16 AM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2026-3633CVSS 3.9 · Low
A flaw was found in libsoup. A remote attacker, by controlling the method parameter of the `soup_message_new()` function, could inject arbitrary headers and additional request dat…
- CVE-2026-1536CVSS 5.8 · Medium
A flaw was found in libsoup. An attacker who can control the input for the Content-Disposition header can inject CRLF (Carriage Return Line Feed) sequences into the header value.…
- CVE-2026-1467CVSS 5.8 · Medium
A flaw was found in libsoup, an HTTP client library. This vulnerability, known as CRLF (Carriage Return Line Feed) Injection, occurs when an HTTP proxy is configured and the libra…
- CVE-2019-9741CVSS 6.1 · Medium
An issue was discovered in net/http in Go 1.11.5. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the second argument to http.NewRequest wi…
- CVE-2016-4993CVSS 6.1 · Medium
CRLF injection vulnerability in the Undertow web server in WildFly 10.0.0, as used in Red Hat JBoss Enterprise Application Platform (EAP) 7.x before 7.0.2, allows remote attackers…
- CVE-2026-12549CVSS 4.8 · Medium
The fix for CVE-2026-2443 was regressed by a subsequent rework commit that replaced specific overflow checks with a general signed comparison. When a client sends a Range request…