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Type:
Public Security Vulnerability
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Resolution: Fixed
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Priority:
Medium
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Affects Version/s: 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, 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, 10.3.25
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Component/s: Security
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8.2
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High
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CVE-2026-67213
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Atlassian (Internal)
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CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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DoS (Denial of Service)
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Jira Software Data Center
This High severity DoS (Denial of Service) vulnerability was introduced in version 10.3.0 and 11.3.0 of Jira Software Data Center.
This DoS (Denial of Service) vulnerability, with a CVSS Score of 8.2 and a CVSS Vector of CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA: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 Software 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 Software Data Center 10.3: Upgrade to a release greater than or equal to 10.3.26
- Jira Software Data Center 11.3: Upgrade to a release greater than or equal to 11.3.11
See the release notes (https://www.atlassian.com/software/jira/download-archives). You can download the latest version
of Jira Software Data Center from the download center (https://www.atlassian.com/software/jira/download-archives).
The National Vulnerability Database provides the following description for this vulnerability:
nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.