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Type:
Public Security Vulnerability
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Resolution: Fixed
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Priority:
High
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Affects Version/s: 5.9.0, 5.10.0, 5.11.0, 5.12.0, 5.13.0, 5.14.0, 10.0.0, 10.1.1, 10.2.0, 10.3.0, 10.3.1, 10.3.2, 10.3.3, 10.3.4, 10.3.5, 10.3.6, 10.3.7, 10.3.8, 10.3.9, 10.3.10, 10.3.11, 10.3.12, 10.3.13, 10.3.14, 10.3.15, 10.4.0, 10.5.0, 10.6.0, 10.7.1, 11.0.0, 11.1.0, 11.2.0, 11.3.0, 11.3.1, 11.3.2, 11.3.3, 11.3.4, 11.3.5, 11.3.6, 11.3.7, 11.3.8, 11.3.9, 11.3.10, 10.3.16, 10.3.17, 10.3.18, 10.3.19, 10.3.20, 10.3.21, 10.3.22, 10.3.23, 10.3.24
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Component/s: None
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7.5
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High
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CVE-2026-59903
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Atlassian (Internal)
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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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Information Disclosure
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Jira Service Management Data Center
This High severity Information Disclosure vulnerability was introduced in versions 10.0.0, 10.1.1, 10.2.0, 10.3.0,
10.4.0, 10.5.0, 10.6.0, 10.7.1, 11.0.0, 11.1.0, 11.2.0, and 11.3.0 of Jira Service Management Data Center.
This Information Disclosure vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, allows an unauthenticated attacker to expose assets in
your environment susceptible to exploitation which has no impact to confidentiality, no impact to integrity, high impact
to availability, and requires no user interaction.
Atlassian recommends that Jira Service Management Data Center customers upgrade to latest version, if you are unable to do so, upgrade
your instance to one of the specified supported fixed versions:
- Jira Service Management Data Center 11.3: Upgrade to a release greater than or equal to 11.3.11
- Jira Service Management Data Center 10.3: Upgrade to a release greater than or equal to 10.3.25
See the release notes (https://confluence.atlassian.com/servicemanagement/jira-service-management-release-notes-780083086.html). You can download the latest version of Jira Service Management Data Center from the download center (https://www.atlassian.com/software/jira/service-management/download-archives).
The National Vulnerability Database provides the following description for this vulnerability:
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final,
io.netty.handler.codec.http.cors.CorsHandler setVaryHeader replaces application Vary headers such as Authorization or
Cookie with Origin, allowing a caching proxy or CDN to reuse authenticated responses across users and disclose sensitive
information. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.