Is CVE-2026-34441 actively exploited?

No active exploitation of CVE-2026-34441 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34441 be exploited remotely?

Yes. CVE-2026-34441 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34441?

CVE-2026-34441 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-34441

CWE-444Published: March 31, 2026· Updated: Apr 1, 2026

6.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.1th

Official Description

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.40.0, cpp-httplib is vulnerable to HTTP Request Smuggling. The server's static file handler serves GET responses without consuming the request body. On HTTP/1.1 keep-alive connections, the unread body bytes remain on the TCP stream and are interpreted as the start of a new HTTP request. An attacker can embed an arbitrary HTTP request inside the body of a GET request, which the server processes as a separate request. This issue has been patched in version 0.40.0.

NVD Source

Technical Analysis

CVE-2026-34441 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.