CVE-2026-12225

syracom Secure Login (2FA) for Confluence allows 2FA bypass via spoofed User-Agent

Published Jun 16, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

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


Vendor Workaround

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

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Syracom
Syracom secure Login (2fa) For Bitbucket
Syracom secure Login (2fa) For Confluence
Syracom secure Login (2fa) For Jira
Vendors & Products Syracom
Syracom secure Login (2fa) For Bitbucket
Syracom secure Login (2fa) For Confluence
Syracom secure Login (2fa) For Jira
Type Values Removed Values Added
Metrics ssvc

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

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
SEC-VLab
Published
Updated
Jun 21, 2026, 7:37 AM
Reserved
Jun 14, 2026, 3:35 PM
Status
Deferred
Published
Jun 16, 2026, 12:16 PM
Modified
Jun 21, 2026, 9:16 AM