CVE-2026-90790
a2aproject a2a-python Push Notification Sender base_push_notification_sender.py _dispatch_notification server-side request forgery
CVSS Score
6.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | a2aproject |
| Product | a2a-python |
| Published | Sep 14, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
a2aproject / a2a-python
1.1.0 1.1.1 1.1.2 1.1.3
References
vuldb.com: https://vuldb.com/vuln/403296 vuldb.com: https://vuldb.com/vuln/403296/cti vuldb.com: https://vuldb.com/cve/CVE-2026-90790 vuldb.com: https://vuldb.com/submit/919747 github.com: https://github.com/a2aproject/a2a-python/pull/1164 github.com: https://github.com/a2aproject/a2a-python/pull/1169 github.com: https://github.com/a2aproject/a2a-python/releases/tag/v1.1.4 github.com: https://github.com/a2aproject/a2a-python/
Credits
🔍 ez-lbz (VulDB User)