CVE-2016-3087

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because EPSS predicts 87% probability of exploitation within the next 30 days (top 0.6% 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 81%
CISA-KEV: Not listedEPSS: 81%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 2.3.19 to 2.3.20.2, 2.3.21 to 2.3.24.1, and 2.3.25 to 2.3.28, when Dynamic Method Invocation is enabled, allow remote attackers to execute arbitrary code via vectors related to an ! (exclamation mark) operator to the REST Plugin.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
99.6%
KEV
Not listed

Published

June 7, 2016

Last Modified

May 6, 2026

Advisory Details (3)

Auto-updated May 7, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Apache Struts - REST Plugin With Dynamic Method Invocation Remote Code Execution (Metasploit) - Multiple remote Exploit

https://www.exploit-db.com/exploits/39919/
generic
http://www.securityfocus.com/bid/90960
generic

S2-033 - Apache Struts 2 Wiki - Apache Software Foundation

http://struts.apache.org/docs/s2-033.html

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.struts:struts2-core2.3.282.3.28.1—

Data Freshness Timeline

(refreshed 3× in last 7d / 21× 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. 2026-07-09 19:05 UTCEPSS rescore
  2. 2026-07-08 15:10 UTCEPSS rescore
  3. 2026-07-08 02:57 UTCOSV refresh
  4. 2026-07-04 06:28 UTCEPSS rescore
  5. 2026-07-01 15:02 UTCEPSS rescore
  6. 2026-06-30 23:19 UTCEPSS rescore
  7. 2026-06-28 14:04 UTCEPSS rescore
  8. 2026-06-28 04:53 UTCEPSS rescore
  9. 2026-06-25 13:47 UTCEPSS rescore
  10. 2026-06-25 13:47 UTCEPSS rescore
  11. 2026-06-23 21:30 UTCEPSS rescore
  12. 2026-06-21 01:57 UTCEPSS rescore
  13. 2026-06-21 01:57 UTCEPSS rescore
  14. 2026-06-19 14:55 UTCOSV refresh
  15. 2026-06-17 17:50 UTCEPSS rescore
  16. 2026-06-17 17:50 UTCEPSS rescore
  17. 2026-06-15 17:45 UTCEPSS rescore
  18. 2026-06-13 22:57 UTCEPSS rescore
  19. 2026-06-13 22:57 UTCEPSS rescore
  20. 2026-06-12 23:09 UTCEPSS rescore
  21. 2026-06-12 23:09 UTCEPSS rescore
  22. 2026-06-10 22:15 UTCEPSS rescore
  23. 2026-06-10 13:18 UTCEPSS rescore
  24. 2026-06-08 14:14 UTCEPSS rescore
  25. 2026-06-07 15:22 UTCEPSS rescore
Show 26 more
  1. 2026-06-07 15:22 UTCEPSS rescore
  2. 2026-06-05 22:44 UTCEPSS rescore
  3. 2026-06-02 20:10 UTCEPSS rescore
  4. 2026-05-31 22:28 UTCEPSS rescore
  5. 2026-05-31 22:28 UTCEPSS rescore
  6. 2026-05-30 21:53 UTCOSV refresh
  7. 2026-05-28 13:42 UTCEPSS rescore
  8. 2026-05-28 13:42 UTCEPSS rescore
  9. 2026-05-27 13:38 UTCEPSS rescore
  10. 2026-05-27 13:38 UTCEPSS rescore
  11. 2026-05-22 21:15 UTCEPSS rescore
  12. 2026-05-22 21:15 UTCEPSS rescore
  13. 2026-05-20 22:37 UTCEPSS rescore
  14. 2026-05-20 22:37 UTCEPSS rescore
  15. 2026-05-20 22:37 UTCEPSS rescore
  16. 2026-05-20 08:47 UTCEG score recompute
  17. 2026-05-20 04:53 UTCEG score recompute
  18. 2026-05-20 00:52 UTCEG score recompute
  19. 2026-05-19 20:45 UTCEG score recompute
  20. 2026-05-19 16:50 UTCEG score recompute
  21. 2026-05-19 12:49 UTCEG score recompute
  22. 2026-05-19 08:55 UTCEG score recompute
  23. 2026-05-19 05:00 UTCEG score recompute
  24. 2026-05-19 01:07 UTCEG score recompute
  25. 2026-05-18 21:30 UTCEPSS rescore
  26. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-43382
    First seen Jun 6, 2017

    Apache Struts - REST Plugin With Dynamic Method Invocation Remote Code Execution

    Open source ↗
  • Exploit-DBEDB-39919✓ verified
    First seen Jun 10, 2016

    Apache Struts - REST Plugin With Dynamic Method Invocation Remote Code Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/multi/http/struts_dmi_rest_exec✓ verified
    First seen Jun 1, 2016

    Apache Struts REST Plugin With Dynamic Method Invocation Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2016-3087?
CVE-2016-3087 is a critical vulnerability published on June 7, 2016. Apache Struts 2.3.19 to 2.3.20.2, 2.3.21 to 2.3.24.1, and 2.3.25 to 2.3.28, when Dynamic Method Invocation is enabled, allow remote attackers to execute arbitrary code via vectors related to an ! (exclamation mark) operator to the REST Plugin.
When was CVE-2016-3087 disclosed?
CVE-2016-3087 was first published in the National Vulnerability Database on June 7, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-3087 actively exploited?
CVE-2016-3087 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-3087?
CVE-2016-3087 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-3087?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-3087, 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-2016-3087

Explore →

Is Your Infrastructure Affected by CVE-2016-3087?

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

Start Free Scan →Browse All CVEs