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TI-2026-67837 Aliases CVE-2026-104711GHSA-wfm5-pq4p-gff9

Expression language injection in Apache Struts legacy RESTful mapper

Priority MEDIUM 52CWE-917Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-917.

Summary

When Apache Struts is configured to use the legacy RESTful action mapper, a crafted request can inject an OGNL expression that may lead to remote code execution (CWE-917). Affected versions are 2.0.0 through 2.3.37, 2.5.0 through 2.5.33, 6.0.0 through 6.11.0 and 7.0.0 through 7.3.0. 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.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01394 72nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Struts2.0.0 – 2.3.37; 2.5.0 – 2.5.33; 6.0.0 – 6.11.0; 7.0.0 – 7.3.0—No fix listedCNA
  • Apache Struts VendorApache Affected 2.0.0 – 2.3.37; 2.5.0 – 2.5.33; 6.0.0 – 6.11.0; 7.0.0 – 7.3.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*2.0.0 – 2.3.37; 2.5.0 – 2.5.33; 6.0.0 to before 6.12.0; 7.0.0 to before 7.4.0VulnerableApache
  • cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:* Versions 2.0.0 – 2.3.37; 2.5.0 – 2.5.33; 6.0.0 to before 6.12.0; 7.0.0 to before 7.4.0 Vulnerable ·Apache

Remediation

Upgrade to Struts 6.12.0 or 7.4.0, which fix the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Fuse 7

Timeline

  1. 2026-10-05 Threatist record created from CVE-2026-104711
  2. 2026-10-06 Alias added: GHSA-wfm5-pq4p-gff9
  3. 2026-10-06 Affected versions changed · Red Hat
  4. 2026-10-06 CVSS score added · Red Hat
  5. 2026-10-06 CVSS score added · CISA ADP
  6. 2026-10-06 CISA SSVC decision points changed
  7. 2026-10-06 Priority changed: LOW → MEDIUM
  8. 2026-10-07 EPSS moved to the 50th–90th percentile
  9. 2026-10-07 Affected versions changed · Red Hat
  10. 2026-10-09 Affected versions changed · Red Hat
  11. 2026-10-20 Affected versions changed · Red Hat

References

Advisory 2

  • TI-2020-13278 Expression language injection in Apache Struts KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-07171 Improper input validation in Apache Struts KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-03639 Improper handling of exceptional conditions in Apache Struts KEVCVSS 3.1CRITICAL 9.8
  • TI-2013-02013 Apache Struts 2.0.0 through 2.3.15 allows remote attackers to execute arbitrary OGNL… KEVCVSS 3.1CRITICAL 9.8
  • TI-2012-00357 The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter… KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-08433 Improper input validation in Apache Struts KEVCVSS 3.1HIGH 8.1
See all 98 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences