CVE-2017-18113Network attack vector

Administrator-assisted code execution via unsafe workflow classes

Published Aug 2, 2021 · Updated Oct 17, 2024

Code injection in Atlassian Jira Server and Jira Data Center before 8.18.1 allows remote attackers to execute arbitrary code via workflow import. DefaultOSWorkflowConfigurator permits workflows to reference unsafe conditions, validators, functions, and registers from OSWorkflow and Jira dependencies. Exploitation requires a system administrator to import the attacker's malicious workflow; successful import runs code with Jira's process privileges.

CVSS severity8.8
High
EPSS probability1.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in Atlassian Jira Server and Jira Data Center before 8.18.1 allows remote attackers to execute arbitrary code via workflow import. DefaultOSWorkflowConfigurator permits workflows to reference unsafe conditions, validators, functions, and registers from OSWorkflow and Jira dependencies. Exploitation requires a system administrator to import the attacker's malicious workflow; successful import runs code with Jira's process privileges.

The record

CVE
CVE-2017-18113
Published
Aug 2, 2021
Updated
Oct 17, 2024
Vendor
Atlassian
Product
Jira Server
Classifications
CWE-94, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <8.18.1
  2. Affected versionversion=unspecified <8.18.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Atlassian · Jira Serverversion=0 <8.18.1; version=unspecified <8.18.1
Atlassian · Jira Data Centerversion=0 <8.18.1; version=unspecified <8.18.1

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo