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CVE-2017-9805

8.1, high Known exploited

Apache Struts Deserialization of Untrusted Data Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
8.1, high high CVSS v3.1
EPSS, next 30 days
99% higher than 99.9% of scored CVEs
Exploitation
Confirmed in the wild
Published
15 Sept 20179 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 3 Nov 2021. US federal agencies had to remediate by 3 May 2022, a deadline that has passed.

Required action. Apply updates per vendor instructions.

Description

The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.

Details

Vendor
Apache
Product
Apache Struts
Weakness
CWE-502 (opens in a new tab)
Status
Analyzed
Updated
17 Jun 2026
Assigner
security@apache.org

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References 13

Exploit code 1

Patches and fixes 1

Advisories 9

1 more

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

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  • CVE-2024-38856 Apache OFBiz Incorrect Authorization Vulnerability KEV EPSS 99% 9.8, critical
  • CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Vulnerability KEV EPSS 100% 9.1, critical
  • CVE-2024-32113 Apache OFBiz Path Traversal Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2024-27348 Apache HugeGraph-Server Improper Access Control Vulnerability KEV EPSS 99% 9.8, critical

Beyond this page

Is CVE-2017-9805 in your network?

This page tells you how dangerous CVE-2017-9805 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2017-9805 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2017-9805 comes with the devices to patch.

    Learn more about EXYS7600 OCELOT

  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 16 Oct 2026, not the live upstream state.