CVE-2011-3923

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because EPSS predicts 91% probability of exploitation within the next 30 days (top 0.3% of all CVEs). NVD baseline CVSS 9.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Weaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 89%
CISA-KEV: Not listedEPSS: 89%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
99.8%
KEV
Not listed

Published

November 1, 2019

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated Jun 10, 2026
🔬 Proof of concept available. No patch confirmed yet. Sources: redhat.
generic
http://www.securityfocus.com/bid/51628
generic🟡 PoC Available

Full Disclosure: SEC Consult SA-20140710-0 :: Multiple critical vulnerabilities in Shopizer webshop

http://seclists.org/fulldisclosure/2014/Jul/38
generic

CVE-2011-3923

https://security-tracker.debian.org/tracker/CVE-2011-3923
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/72585
redhat

997755 – (CVE-2011-3923) CVE-2011-3923 struts2: Remote code execution via OGNL injention in HTTP parameter values

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3923
generic
http://www.securitytracker.com/id?1026575

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.struts:struts2-core2.0.11 ... 2.3.1.1 (19 versions)2.3.1.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 1× in last 7d / 14× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:23 UTCEPSS rescore
  2. 2026-06-28 04:53 UTCEPSS rescore
  3. 2026-06-28 04:52 UTCEPSS rescore
  4. 2026-06-25 13:46 UTCEPSS rescore
  5. 2026-06-24 14:02 UTCEPSS rescore
  6. 2026-06-24 14:02 UTCEPSS rescore
  7. 2026-06-23 21:30 UTCEPSS rescore
  8. 2026-06-23 21:30 UTCEPSS rescore
  9. 2026-06-15 17:44 UTCEPSS rescore
  10. 2026-06-14 23:14 UTCEPSS rescore
  11. 2026-06-14 23:14 UTCEPSS rescore
  12. 2026-06-13 22:57 UTCEPSS rescore
  13. 2026-06-13 22:57 UTCEPSS rescore
  14. 2026-06-12 23:08 UTCEPSS rescore
  15. 2026-06-10 22:14 UTCEPSS rescore
  16. 2026-06-10 13:17 UTCEPSS rescore
  17. 2026-06-08 14:14 UTCEPSS rescore
  18. 2026-06-08 14:14 UTCEPSS rescore
  19. 2026-06-05 22:44 UTCEPSS rescore
  20. 2026-06-05 06:08 UTCEPSS rescore
  21. 2026-06-05 06:07 UTCEPSS rescore
  22. 2026-06-01 13:49 UTCEPSS rescore
  23. 2026-06-01 13:49 UTCEPSS rescore
  24. 2026-05-28 13:42 UTCEPSS rescore
  25. 2026-05-28 13:42 UTCEPSS rescore
Show 6 more
  1. 2026-05-28 13:42 UTCEPSS rescore
  2. 2026-05-27 12:20 UTCEG score recompute
  3. 2026-05-26 13:41 UTCEPSS rescore
  4. 2026-05-26 13:41 UTCEPSS rescore
  5. 2026-05-26 07:16 UTCEPSS rescore
  6. 2026-05-26 07:16 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-24874✓ verified
    First seen Mar 22, 2013

    Apache Struts - 'ParametersInterceptor' Remote Code Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/multi/http/struts_code_exec_parameters✓ verified
    First seen Oct 1, 2011

    Apache Struts ParametersInterceptor Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2011-3923?
CVE-2011-3923 is a critical vulnerability published on November 1, 2019. Apache Struts before 2.3.1.2 allows remote attackers to bypass security protections in the ParameterInterceptor class and execute arbitrary commands.
When was CVE-2011-3923 disclosed?
CVE-2011-3923 was first published in the National Vulnerability Database on November 1, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-3923 actively exploited?
CVE-2011-3923 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2011-3923?
CVE-2011-3923 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2011-3923?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-3923, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2011-3923

Explore →

Is Your Infrastructure Affected by CVE-2011-3923?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs