Is CVE-2026-3633 actively exploited?

No active exploitation of CVE-2026-3633 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3633 be exploited remotely?

Yes. CVE-2026-3633 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3633?

CVE-2026-3633 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-3633

CWE-93Published: March 17, 2026· Updated: Mar 19, 2026

6.5

CVSS v3.1

EPSS:0.11%probability of exploitation in 30 daysPercentile:28.6th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-3633 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.