Vulnerability · CVE-2011-3923
Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands.
Published Nov 1, 2019 · catalog updated Nov 9, 2026 · Apache Struts
Last checked Nov 9, 2026. A connected source was read within the last 7 days.
Patch now
CVE-2011-3923 is in the CISA known-exploited catalog. Confirm Apache Struts against the vendor advisory and apply that fix. The CVSS score does not change the priority.
Same product and reporting
- CVE-2021-31805 · Unknown · known exploited
- CVE-2014-0113 · Unknown · known exploited
- CVE-2014-0112 · Unknown · known exploited
- CVE-2020-17530 · Critical · known exploited
- CVE-2018-11776 · High · known exploited
- Severity
- Critical9.8
- Known exploitation
- CISA KEV and VulnCheck KEV
- EPSS
- 89.49%
- Remediation
- Remediation guidance
- Affected products
- cpe apache/struts · cpe redhat/jboss enterprise web server · vendor Apache Struts
Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands. VulnCheck canary evidence.
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< 2.3.1.2
- cpe redhat/jboss enterprise web server1.0.0
- vendor Apache Strutsversion unspecified
How to fix CVE-2011-3923
Vendor action
Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Version check
Affected < 2.3.1.2
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2011-3923 is in the CISA known-exploited catalog. Confirm Apache Struts against the vendor advisory and apply that fix. The CVSS score does not change the priority.
Which versions are affected?
Compare what you have installed with redhat/jboss enterprise web server 1.0.0. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
What should an analyst verify?
CWE-732: Incorrect Permission Assignment for Critical Resource. EPSS 89.49%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Technology hubs
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.
Nov 1, 2019 · Monitored products — high
Detected
Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands.
Jun 16, 2026 · Monitored products — high
Updated
Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands.
Nov 9, 2026 · CISA KEV
Known exploited
Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Nov 9, 2026 · VulnCheck KEV
Updated
Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands. VulnCheck canary evidence.
Sources
- CVE.orgVulnerability recordCVE-2011-3923
Official CVE identifier
cve.org - Monitored products — highVendor advisoryCVE-2011-3923
Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands.
nvd.nist.gov - VulnCheck KEVConfirmed exploitationCVE-2011-3923
Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands.
vulncheck.com
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.
- VulnCheck KEVNov 9, 2026
- CVE.orgNov 8, 2026
- Monitored products — highNov 8, 2026