November 14, 2026

CVE Watchtower

CVE-2026-104711Apache Struts

NVDCVSS scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0

Vulnerability Summary

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.
Severity Level
CRITICAL(9.8)
Published Date
Oct 5, 2026
Last Modified
Oct 8, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
1.39%Probability
Root Weakness (CWE)
CWE-917 β†—
See the MITRE CWE entry for the full definition of this weakness.
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Apache Struts >= 2.0.0 and <= 2.3.37
  • Apache Struts >= 2.5.0 and <= 2.5.33
  • Apache Struts >= 6.0.0 and < 6.12.0
  • Apache Struts >= 7.0.0 and < 7.4.0
Patched Versions
  • Apache Struts 6.12.0
  • Apache Struts 7.4.0

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is critical.

  1. Check whether you run Apache Struts and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Oct 5, 2026Published
  • Oct 8, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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Related Coverage

More Apache Struts CVEs

External References

Data last checked: Nov 14, 2026 05:11 UTC