How severe is CVE-2016-3082?

CVE-2016-3082 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2016-3082?

CVE-2016-3082 affects the following packages: org.apache.struts:struts2-core (Maven), org.apache.struts:struts2-core (Maven), org.apache.struts:struts2-core (Maven). Ecosystems affected: Maven.

How do I fix CVE-2016-3082?

Update org.apache.struts:struts2-core to 2.3.20.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-3082 is resolved across your whole dependency graph.

How do I detect CVE-2016-3082 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.struts:struts2-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2016-3082 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2016-3082 actively exploited in the wild?

No public exploit code has been indexed for CVE-2016-3082 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2016-3082?

CVE-2016-3082 has an EPSS (Exploit Prediction Scoring System) score of 19.2%, placing it in the 97th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

What type of vulnerability is CVE-2016-3082?

CVE-2016-3082 is classified as Improper Input Validation (CWE-20). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2016-3082 published, and has it been updated?

CVE-2016-3082 was published on April 26, 2016 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

CRITICAL severity

CVE-2016-3082 — struts2-core

CRITICAL

CVE-2016-3082 is a critical-severity (CVSS 9.8) Improper Input Validation vulnerability in org.apache.struts:struts2-core. EPSS puts its 30-day exploitation probability at 19.2% (97th percentile). A fix is available for org.apache.struts:struts2-core — see the affected versions and patch details below.

Remote Code Execution in Apache Struts

Also known asGHSA-pvm9-288c-v5wq

Published

Apr 26, 2016

Updated

Oct 24, 2026

Affected

3 pkgs

Patched

3 / 3

Exploits

None indexed

Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

19.2%probability of exploitation in next 30 days

Moderate Risk0.00%

Lower risk than most CVEs97th percentile — riskier than 97% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

3 pkgs affected

☕org.apache.struts:struts2-core☕org.apache.struts:struts2-core☕org.apache.struts:struts2-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

XSLTResult in Apache Struts 2.x before 2.3.20.2, 2.3.24.x before 2.3.24.2, and 2.3.28.x before 2.3.28.1 allows remote attackers to execute arbitrary code via the stylesheet location parameter.

Affected Packages

3 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.struts:struts2-core`	all versions	2.3.20.3`org.apache.struts:struts2-core:2.3.20.3`
☕Maven	`org.apache.struts:struts2-core`	≥ 2.3.24&&< 2.3.24.3	2.3.24.3`org.apache.struts:struts2-core:2.3.24.3`
☕Maven	`org.apache.struts:struts2-core`	≥ 2.3.28&&< 2.3.28.1	2.3.28.1`org.apache.struts:struts2-core:2.3.28.1`

Affected Products

1 product · 56 configurations

Application

strutsapache

56 versions

2.0.02.0.12.0.22.0.32.0.42.0.52.0.62.0.72.0.82.0.92.0.102.0.11

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.struts:struts2-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.struts:struts2-core to 2.3.20.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-3082 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

XSLTResult in Apache Struts 2.x before 2.3.20.2, 2.3.24.x before 2.3.24.2, and 2.3.28.x before 2.3.28.1 allows remote attackers to execute arbitrary code via the stylesheet location parameter.

O3 Security · Impact-Aware SCA

Is CVE-2016-3082 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

9.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE Classification

CWE-20Improper Input Validation

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

OpenSSF Scorecard

Package health score

struts

8.7/10

Maintained10/10

Code-Review3/10

Dependency-Update-Tool10/10

Branch-ProtectionN/A

Vulnerabilities8/10

Assessed Nov 6, 2026

Timeline

Disclosed

Apr 26, 2016

Last updated

Oct 24, 2026

Identifiers

CVE-2016-3082

GHSA-pvm9-288c-v5wq

References

Advisorynvd.nist.gov · CVE 2016 3082 Fixstruts.apache.org · s2 031 Websecurityfocus.com Websecuritytracker.com Packagegithub.com · struts

Related vulnerabilities

This CVE is critical severity; 2 of 8 other CVEs affecting struts2-core are rated as high or higher (top: critical).

CVE-2025-68493CVE-2025-66675CVE-2025-64775CVE-2024-53677CVE-2023-50164CVE-2023-41835CVE-2023-34396CVE-2023-34149

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2016-3082 — struts2-core

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2016-3082 in your dependencies?