Security Research // Access Control
Enterprise Plugin Authorization Bypass
Atlassian Marketplace // JEMH Plugin
Identified an authorization context confusion vulnerability in JEMH (Jira Enterprise Mail Handler), a popular Atlassian Marketplace enterprise plugin with thousands of active installations. The finding demonstrated how plugin-level authorization can be bypassed when Jira's built-in access controls are assumed to cascade to third-party add-ons.
RESPONSIBLY DISCLOSED
Vulnerability Details
- Plugin trusted Jira's authentication context without performing its own authorization checks, creating an authorization gap
- Low-privilege users could access administrative endpoints within the JEMH plugin by exploiting this trust boundary
- The vulnerability expose configuration data and mail handler settings to unauthorized users through predictable API patterns
- Systematic API enumeration revealed multiple endpoints sharing the same authorization context confusion pattern
Impact & Disclosure
- Responsibly disclosed to the vendor through coordinated vulnerability disclosure process
- Vendor acknowledged the finding and implemented authorization fixes in subsequent plugin updates
- Finding highlights the systemic risk of third-party plugins assuming host application authorization cascades
- Published to raise awareness about authorization boundary confusion in plugin ecosystems
Technologies & Tools
Atlassian SDKJira REST APIBurp SuiteAuthorization TestingAPI Enumeration
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