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CVE-2017-9791

The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message…

Critical9.8Known exploitedEPSS 98.9%
Published
Updated
Reserved
Assigned by
apache

Description

The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.

Exploited in the wild

CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Apache Struts 1 Improper Input Validation Vulnerability.

Added
10 Feb 2022
Fix due (US federal)
10 Aug 2022
Used by ransomware
Not known

Apply updates per vendor instructions.

Scores

CVSS scores of CVE-2017-9791, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Analyzed3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
98.9% · top 0.1% of all CVEs (4 Nov 2026)
CISA SSVC
Exploitation: active · Automatable: yes · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

Affected products

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (8)

Sources

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

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Record last updated .