CVE-2026-3633
low-risk
Published 2026-03-17
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 data. This vulnerability, known as CRLF (Carriage Return Line Feed) injection, occurs because the method value is not properly escaped during request line construction, potentially leading to HTTP request injection.
Do I need to act?
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0.04% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.9/10
Low
NETWORK
/ HIGH complexity
Affected Products (6)
References (3)
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-3633
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2445128
26
/ 100
low-risk
Severity
13/34 · Low
Exploitability
0/34 · Minimal
Exposure
13/34 · Low