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  5. CVE-2018-11776

CVE-2018-11776: Apache Struts vulnerable to remote command execution (RCE) due to improper input validation

October 18, 2018 (updated October 22, 2025)

Apache Struts contains a Remote Code Execution when using results with no namespace and it’s upper actions have no or wildcard namespace. The same flaw exists when using a url tag with no value, action set, and it’s upper actions have no or wildcard namespace.

References

  • cwiki.apache.org/confluence/display/WW/S2-057
  • github.com/advisories/GHSA-cr6j-3jp9-rw65
  • github.com/apache/struts
  • github.com/apache/struts/commit/6e87474f9ad0549f07dd2c37d50a9ccd0977c6e
  • github.com/hook-s3c/CVE-2018-11776-Python-PoC
  • lgtm.com/blog/apache_struts_CVE-2018-11776
  • lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c%40%3Cannounce.apache.org%3E
  • lists.apache.org/thread.html/r6d03e45b81eab03580cf7f8bb51cb3e9a1b10a2cc0c6a2d3cc92ed0c@%3Cannounce.apache.org%3E
  • nvd.nist.gov/vuln/detail/CVE-2018-11776
  • psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0012
  • security.netapp.com/advisory/ntap-20180822-0001
  • security.netapp.com/advisory/ntap-20181018-0002
  • web.archive.org/web/20180822160726/http://www.securityfocus.com/bid/105125
  • web.archive.org/web/20200807025819/http://www.securitytracker.com/id/1041888
  • web.archive.org/web/20201208145803/https://securitytracker.com/id/1041547
  • www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-11776
  • www.exploit-db.com/exploits/45260
  • www.exploit-db.com/exploits/45262
  • www.exploit-db.com/exploits/45367
  • www.oracle.com/security-alerts/cpujul2020.html
  • www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html

Code Behaviors & Features

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Affected versions

All versions starting from 2.0.4 before 2.3.35, all versions starting from 2.5 before 2.5.17

Fixed versions

  • 2.3.35
  • 2.5.17

Solution

Upgrade to versions 2.3.35, 2.5.17 or above.

Impact 8.1 HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-20: Improper Input Validation

Source file

maven/org.apache.struts/struts2-core/CVE-2018-11776.yml

Spotted a mistake? Edit the file on GitLab.

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