HIGH

CVE-2026-104712

Apache Struts: Disproportionate response size when rendering BigDecimal request parameters

CVSS v3

7.5

HIGH

EPSS Score

—

exploit probability

CISA KEV

known exploited

Exploitation

—

SSVC status

Description

Asymmetric resource consumption (amplification) vulnerability in Apache Struts. When a request parameter is bound to an arbitrary-precision decimal (java.math.BigDecimal) property that is then rendered through the Struts tag library, the framework can produce a response many orders of magnitude larger than the request, allowing an unauthenticated remote attacker to exhaust server CPU and outbound network capacity with sustained low-volume traffic. Applications that do not bind request parameters

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-10-05
Last Modified: 2026-10-06

Frequently asked questions

What is CVE-2026-104712?

Is CVE-2026-104712 actively exploited?

Active exploitation of CVE-2026-104712 has not been confirmed.

What is the CVSS score for CVE-2026-104712?

CVE-2026-104712 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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