How severe is CVE-2017-18104?

CVE-2017-18104 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-18104 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18104?

CVE-2017-18104 primarily affects Atlassian Jira. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-18104?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-18104 published?

CVE-2017-18104 was published on 2018-07-24 and last updated on 2026-06-17.

CVE-2017-18104

CVE-2017-18104 is a medium-severity vulnerability in Atlassian Jira with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Atlassian Jira
Published: 2018-07-24
Last modified: 2026-06-17

Description

The Webhooks component of Atlassian Jira before version 7.6.7 and from version 7.7.0 before version 7.11.0 allows remote attackers who are able to observe or otherwise intercept webhook events to learn information about changes in issues that should not be sent because they are not contained within the results of a specified JQL query.

Frequently asked questions

What is CVE-2017-18104?: The Webhooks component of Atlassian Jira before version 7.6.7 and from version 7.7.0 before version 7.11.0 allows remote attackers who are able to observe or otherwise intercept webhook events to learn information about changes in issues that should not be sent because they are not contained within the results of a specified JQL query.
How severe is CVE-2017-18104?: CVE-2017-18104 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-18104 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18104?: CVE-2017-18104 primarily affects Atlassian Jira. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-18104?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18104 published?: CVE-2017-18104 was published on 2018-07-24 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/JRASERVER-59980

Affected products (2)

cpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*

More vulnerabilities in Atlassian Jira

CVE-2020-14172 — Critical (CVSS 9.8): This issue exists to document that a security improvement in the way that Jira Server and Data Center use velocity…
CVE-2019-20409 — Critical (CVSS 9.8): The way in which velocity templates were used in Atlassian Jira Server and Data Center prior to version 8.8.0 allowed…
CVE-2017-5983 — Critical (CVSS 9.8): The JIRA Workflow Designer Plugin in Atlassian JIRA Server before 6.3.0 improperly uses an XML parser and deserializer,…
CVE-2012-2926 — Critical (CVSS 9.1): Atlassian JIRA before 5.0.1; Confluence before 3.5.16, 4.0 before 4.0.7, and 4.1 before 4.1.10; FishEye and Crucible…
CVE-2010-1165 — Critical (CVSS 9.0): Atlassian JIRA 3.12 through 4.1 allows remote authenticated administrators to execute arbitrary code by modifying the…
CVE-2017-18113 — High (CVSS 8.8): The DefaultOSWorkflowConfigurator class in Jira Server and Jira Data Center before version 8.18.1 allows remote…

All CVEs affecting Atlassian Jira →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →