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Server side object manipulation in Apache Struts

CVE-2010-1870GHSA-x5fc-pgpx-59j5

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (org.apache.struts:struts2-core 2.2.1), redeploy, then verify what is actually installed.

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

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
not scored
EPSS
  • CVE-2010-1870: 92.02% estimated exploitation activity in the next 30 days; percentile 99.82 (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.

OGNL provides, among other features, extensive expression evaluation capabilities. This vulnerability allows a malicious user to bypass the '#'-usage protection built into the ParametersInterceptor, thus being able to manipulate server side context objects. This behavior was already addressed in S2-003, but it turned out that the resulting fix based on whitelisting acceptable parameter names closed the vulnerability only partially.

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

    Published from ghsa record GHSA-x5fc-pgpx-59j5

Agent brief

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# Patch Next advisory brief: CVE-2010-1870

Advisory: Server side object manipulation in Apache Struts
IDs: CVE-2010-1870, GHSA-x5fc-pgpx-59j5
Record: https://patchnext.com/advisories/cve-2010-1870 (revision 1, source checked 26 Oct 2026, 16:12 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.apache.struts:struts2-core 2.2.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.apache.struts:struts2-core: affected < 2.2.1; fixed in 2.2.1

## Suggested inspection (read-only)
- Maven org.apache.struts:struts2-core: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.apache.struts:struts2-core.
- 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-x5fc-pgpx-59j5 (GitHub-reviewed advisory GHSA-x5fc-pgpx-59j5 lists affected ranges: Maven org.apache.struts:struts2-core >=0 <2.2.1)

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