Apache Struts 2.3.1.2 and earlier, 2.3.19-2.3.23, provides interfaces that do not properly restrict access to collections such as the session and request collections, which might allow remote attackers to modify run-time data values via a crafted parameter to an application that implements an affected interface, as demonstrated by the SessionAware, RequestAware, ApplicationAware, ServletRequestAware, ServletResponseAware, and ParameterAware interfaces. NOTE: the vendor disputes the significance of this report because of an "easy work-around in existing apps by configuring the interceptor."
Conclusion & alert: CVE-2011-5057 is rated High Exploit Risk (64.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 28.63%, 98th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 36426 | exploit_db | edb | 2011-12-07 | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 52.91% | 28.63% | -24.28% |
| 2 | 2026-04-27 | 56.27% | 52.91% | -3.36% |
| 3 | 2026-02-12 | — | 56.27% | — |
Full EPSS history (22 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2011-5057 |
ubuntu
|
medium | CVE-2011-5057 medium priority: Ubuntu including 1 source packages (libstruts1.2-java), 21 status rows across 21 suites (artful, bionic, cosmic, disco, hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): DNE 10, ignored 10, needs-triage 1. | https://ubuntu.com/security/CVE-2011-5057 |
| URL | Tags |
|---|---|
| http://codesecure.blogspot.com/2011/12/struts-2-session-tampering-via.html | Third Party Advisory |
| http://secunia.com/advisories/47109 | Permissions Required |
| https://issues.apache.org/jira/browse/WW-2264 | Issue Tracking Vendor Advisory |
| https://issues.apache.org/jira/browse/WW-3631 | Issue Tracking Vendor Advisory |