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High, CVSS 8.2

Improper Input Validation in Apache Struts

CVE-2016-1182GHSA-5ggr-mpgw-3mgx

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Maven org.apache.struts:struts-core

    Affected
    <= 1.3.10
    Fixed in
    no fixed version recorded

  • Maven struts:struts

    Affected
    <= 1.2.9
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
8.2 · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS
  • CVE-2016-1182: 25.74% estimated exploitation activity in the next 30 days; percentile 97.97 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

ActionServlet.java in Apache Struts 1 1.x through 1.3.10 does not properly restrict the Validator configuration, which allows remote attackers to conduct cross-site scripting (XSS) attacks or cause a denial of service via crafted input, a related issue to CVE-2015-0899.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-5ggr-mpgw-3mgx

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2016-1182

Advisory: Improper Input Validation in Apache Struts
IDs: CVE-2016-1182, GHSA-5ggr-mpgw-3mgx
Record: https://patchnext.com/advisories/cve-2016-1182 (revision 1, source checked 26 Oct 2026, 16:40 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.2)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.apache.struts:struts-core: affected <= 1.3.10
- Maven struts:struts: affected <= 1.2.9

## Suggested inspection (read-only)
- Maven org.apache.struts:struts-core: check the installed version with your package manager.
- Maven struts:struts: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.apache.struts:struts-core, struts:struts.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-5ggr-mpgw-3mgx (GitHub-reviewed advisory GHSA-5ggr-mpgw-3mgx lists affected ranges: Maven org.apache.struts:struts-core >=0 =0 <=1.2.9)

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