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Vulnerabilities

Vulnerability · CVE-2026-104712

Asymmetric resource consumption (amplification) vulnerability in Apache Struts.

Published Oct 5, 2026 · catalog updated Oct 8, 2026 · Asymmetric resource consumption (amplification)

Last checked Nov 8, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-104712. EPSS is 0.84%. Act only if a listed version of Asymmetric resource consumption (amplification) is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Asymmetric resource consumption (amplification)).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.84%
Remediation
Version ranges on file
Affected products
cpe apache/struts

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/struts< 6.12.0
  • cpe apache/struts< 7.4.0
  • cpe apache/struts>= 2.5.14, <= 2.5.33

How to fix CVE-2026-104712

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-104712. EPSS is 0.84%. Act only if a listed version of Asymmetric resource consumption (amplification) is installed.

Which versions are affected?

Compare what you have installed with < 6.12.0, < 7.4.0, >= 2.5.14, <= 2.5.33. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-405. EPSS 0.84%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Apache Struts security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 5, 2026 · Monitored products — high

    Detected

    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

  2. Oct 8, 2026 · Monitored products — high

    Updated

    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

Sources

  • FIRST EPSSExploitation probabilityCVE-2026-104712

    30-day exploitation probability 0.84%

    first.org
  • Monitored products — highVendor advisoryCVE-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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 8, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 8, 2026
  • Monitored products — highNov 8, 2026