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CVE-2017-9805

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…

High8.1Known exploitedEPSS 99.4%
Published
Updated
Reserved
Assigned by
apache

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.

Exploited in the wild

CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Apache Struts Deserialization of Untrusted Data Vulnerability.

Added
3 Nov 2021
Fix due (US federal)
3 May 2022
Used by ransomware
Not known

Apply updates per vendor instructions.

Scores

CVSS scores of CVE-2017-9805, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1High8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Analyzed3.1High8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
99.4% · top 0.1% of all CVEs (3 Nov 2026)
CISA SSVC
Exploitation: active · Automatable: no · Technical impact: total

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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.

Weakness

Affected products

  • Apache Software Foundation · Apache Struts

    • affected Apache Struts before 2.3.34 and 2.5.x before 2.5.13

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (13)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .