Is CVE-2026-3260 actively exploited?

No active exploitation of CVE-2026-3260 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3260 be exploited remotely?

Yes. CVE-2026-3260 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3260?

CVE-2026-3260 has a CVSS score of 5.9 (MEDIUM).

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MEDIUM

CVE-2026-3260

CWE-770Published: March 24, 2026· Updated: Mar 24, 2026

5.9

CVSS v3.1

EPSS:0.50%probability of exploitation in 30 daysPercentile:65.8th

Official Description

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending an HTTP GET request containing multipart/form-data content. If the underlying application processes parameters using methods like `getParameterMap()`, the server prematurely parses and stores this content to disk. This could lead to resource exhaustion, potentially resulting in a Denial of Service (DoS).

NVD Source

Technical Analysis

CVE-2026-3260 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.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.9.