# CVE-2017-9805: Apache Struts Deserialization of Untrusted Data Vulnerability

> CVE-2017-9805: Apache Struts Deserialization of Untrusted Data Vulnerability. CVSS 8.1 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2017-9805
Last updated: 2025-10-21T23:55:34Z

- Published: 2017-09-15 19:00 UTC · Updated: 2025-10-21 23:55 UTC · Assigner: apache
- CVSS: 8.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 99.4%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2022-05-03, ransomware use: Unknown

## 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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Apache Software Foundation: Apache Struts

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2017-9805)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2017-9805)
- [https://blogs.apache.org/foundation/entry/apache-struts-statement-on-equifax](https://blogs.apache.org/foundation/entry/apache-struts-statement-on-equifax)
- [https://bugzilla.redhat.com/show\_bug.cgi?id=1488482](https://bugzilla.redhat.com/show_bug.cgi?id=1488482)
- [https://cwiki.apache.org/confluence/display/WW/S2-052](https://cwiki.apache.org/confluence/display/WW/S2-052)
- [https://lgtm.com/blog/apache\_struts\_CVE-2017-9805](https://lgtm.com/blog/apache_struts_CVE-2017-9805)
- [https://security.netapp.com/advisory/ntap-20170907-0001/](https://security.netapp.com/advisory/ntap-20170907-0001/)
- [https://struts.apache.org/docs/s2-052.html](https://struts.apache.org/docs/s2-052.html)
- [https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2)
- [https://www.exploit-db.com/exploits/42627/](https://www.exploit-db.com/exploits/42627/)
- [https://www.kb.cert.org/vuls/id/112992](https://www.kb.cert.org/vuls/id/112992)
- [http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html](http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html)
- [http://www.securityfocus.com/bid/100609](http://www.securityfocus.com/bid/100609)
- [http://www.securitytracker.com/id/1039263](http://www.securitytracker.com/id/1039263)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2017-9805 · Markdown: https://rewindex.com/cve/CVE-2017-9805.md · JSON: https://rewindex.com/api/v1/cves/CVE-2017-9805 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:44:16.950Z