syracom AG Secure Login (2FA) for Atlassian Jira, Confluence, and Bitbucket 3.4.0.x contains an authentication bypass vulnerability. An attacker with valid credentials for a user account can bypass the two-factor authentication flow by sending HTTP requests with a crafted User-Agent header containing specific strings such as AtlassianMobileApp or JIRA. When such a User-Agent is present, the plugin does not enforce the configured 2FA checks for protected web resources. Successful exploitation allows the attacker to access the affected Atlassian application as the compromised user without completing 2FA. If the compromised account has administrative privileges, the attacker can access administrative functionality and may disable the 2FA plugin or make arbitrary administrative changes. The issue is fixed in version 3.5.0.0.

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Advisories

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Fixes

Solution

Upgrade Secure Login (2FA) for Jira, Confluence, and Bitbucket to version 3.5.0.0 or later.


Workaround

No workaround is required. The vendor provides a fixed version 3.5.0.0, which should be installed immediately.

History

Tue, 16 Jun 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 16 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
Description syracom AG Secure Login (2FA) for Atlassian Jira, Confluence, and Bitbucket 3.4.0.x contains an authentication bypass vulnerability. An attacker with valid credentials for a user account can bypass the two-factor authentication flow by sending HTTP requests with a crafted User-Agent header containing specific strings such as AtlassianMobileApp or JIRA. When such a User-Agent is present, the plugin does not enforce the configured 2FA checks for protected web resources. Successful exploitation allows the attacker to access the affected Atlassian application as the compromised user without completing 2FA. If the compromised account has administrative privileges, the attacker can access administrative functionality and may disable the 2FA plugin or make arbitrary administrative changes. The issue is fixed in version 3.5.0.0.
Title syracom Secure Login (2FA) for Confluence allows 2FA bypass via spoofed User-Agent
Weaknesses CWE-288
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: SEC-VLab

Published:

Updated: 2026-06-16T11:20:37.621Z

Reserved: 2026-06-14T15:35:21.997Z

Link: CVE-2026-12225

cve-icon Vulnrichment

Updated: 2026-06-16T12:09:08.635Z

cve-icon NVD

Status : Received

Published: 2026-06-16T12:16:26.097

Modified: 2026-06-16T12:16:26.097

Link: CVE-2026-12225

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses