CVE-2026-90790
5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
Summary
A security vulnerability has been detected in a2aproject a2a-python up to 1.1.3. This affects the function _dispatch_notification of the file src/a2a/server/tasks/base_push_notification_sender.py of the component Push Notification Sender. The manipulation of the argument push_info.url leads to server-side request forgery. Remote exploitation of the attack is possible. Upgrading to version 1.1.4 is able to mitigate this issue. It is suggested to upgrade the affected component.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| a2aproject | a2a-python | 1.1.0 | affected |
| a2aproject | a2a-python | 1.1.1 | affected |
| a2aproject | a2a-python | 1.1.2 | affected |
| a2aproject | a2a-python | 1.1.3 | affected |
| a2aproject | a2a-python | 1.1.4 | unaffected |
Weaknesses
- CWE-918: Server-Side Request Forgery
References
- https://vuldb.com/vuln/403296
- https://vuldb.com/vuln/403296/cti
- https://vuldb.com/cve/CVE-2026-90790
- https://vuldb.com/submit/919747
- https://github.com/a2aproject/a2a-python/pull/1164
- https://github.com/a2aproject/a2a-python/pull/1169
- https://github.com/a2aproject/a2a-python/releases/tag/v1.1.4
- https://github.com/a2aproject/a2a-python/
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