CVE-2026-12225 json
syracom Secure Login (2FA) for Confluence allows 2FA bypass via spoofed User-Agent
published 4mo ago modified 4mo ago also EUVD-2026-37066
- cvss
- 8.7
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- syracom AG Secure Login (2FA) for Jira 3.5.0.0
- syracom AG Secure Login (2FA) for Confluence 3.5.0.0
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4mo ago
Exploit prediction
0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | 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 |
| CNA | 4.0 | 8.7 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- syracom AG Secure Login (2FA) for Jira
- syracom AG Secure Login (2FA) for Confluence
- syracom AG Secure Login (2FA) for Bitbucket
Classification
- Weakness
-
- CWE-288 Authentication Bypass Using an Alternate Path or Channel
References
-
syracom-bee.atlassian.net
/wiki/spaces/SL/pages/4193255427/2026-05-11+-+Secure+Login+security+advisory+-+Broken+Access+Control
vendor-advisory
-
marketplace.atlassian.com
/apps/1214491/secure-login-2fa-for-confluence
product
-
syracom-bee.atlassian.net
/wiki/spaces/SL/pages/4230217729/Mobile+app+login+does+not+work+with+Secure+Login
mitigation
-
r.sec-consult.com
/syracom
third-party-advisory
- seclists.org /fulldisclosure/2026/Jun/16
Sources
- CVE List CVE-2026-12225
- NVD CVE-2026-12225
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