# CVE-2026-104712 — Apache Struts

> As of 2026-10-06, CVE-2026-104712 is a HIGH-severity vulnerability in Apache Struts, CVSS v3.1 7.5, EPSS 0.5% (46.0th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-104712, most recently “Apache Struts Vulnerabilities Enable Remote Code Execution and Denial of Service (CVE-2026-104711, CVE-2026-104712, CVE-2026-104713, CVE-2026-104714)”.

**Last updated:** 2026-10-06

## What is CVE-2026-104712?

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 to BigDecimal properties, or never render such a property through the Struts tag library, are not affected. This issue affects Apache Struts: from 2.5.14 through 2.5.33, from 6.0.0 through 6.11.0, from 7.0.0 through 7.3.0. Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue.

The record classifies CVE-2026-104712 under weakness class [CWE-405](https://intel.threadlinqs.com/cwe/CWE-405). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 5 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.5 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **EPSS (FIRST):** 0.5% probability of exploitation in the next 30 days, higher than 46.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-05, last modified 2026-10-06

## Is CVE-2026-104712 being exploited?

No public exploitation evidence for CVE-2026-104712 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-10-06. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited.

## Affected products and versions

- [Apache Software Foundation](https://intel.threadlinqs.com/vendors/apache-software-foundation): Apache Struts

## How to fix CVE-2026-104712

No vendor patch reference has been recorded for CVE-2026-104712 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-104712

1 tracked threat in the Threadlinqs corpus references CVE-2026-104712, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Apache Struts Vulnerabilities Enable Remote Code Execution and Denial of Service (CVE-2026-104711, CVE-2026-104712, CVE-2026-104713, CVE-2026-104714)](https://intel.threadlinqs.com/threat/TL-2026-2982) — HIGH · 2026-10-06

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-07. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [cwiki.apache.org — vendor advisory](https://cwiki.apache.org/confluence/display/WW/S2-076)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-104712
Full detection coverage and IOCs for threats exploiting CVE-2026-104712 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp