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CVE-2026-104711

Apache Struts remote code execution

9.8 CRITICALEPSS 1.19%
  1. Published5 Oct 2026

Description

Improper neutralization of special elements used in an expression language statement ('Expression Language Injection') vulnerability in Apache Struts. If the application is configured to use the legacy RESTful action mapper, a crafted request can inject an OGNL expression that may lead to remote code execution. Struts 7 is affected only when the OGNL allowlist is disabled; it is enabled by default. Applications using the default action mapper, the restful2 mapper, or the Struts REST plugin are not affected. This issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Struts≥ 2.0.0 ≤ 2.3.37 · ≥ 2.5.0 ≤ 2.5.33 · ≥ 6.0.0 < 6.12.0 · ≥ 7.0.0 < 7.4.0

Remediation

Fixed in
Apache Struts≥ 6.12.0

References

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Frequently asked

Is CVE-2026-104711 being actively exploited?

CVE-2026-104711 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.19%.

How severe is CVE-2026-104711?

CVE-2026-104711 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.19% probability of exploitation.

Which products are affected by CVE-2026-104711?

Affected products include Apache Struts.

How do I fix CVE-2026-104711?

Upgrade affected software to a fixed version, for example Apache Struts 6.12.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-104711 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.