{"id":"CVE-2026-90790","summary":"a2aproject a2a-python Push Notification Sender base_push_notification_sender.py _dispatch_notification server-side request forgery","details":"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.","modified":"2026-09-17T03:31:10.349757488Z","published":"2026-09-14T14:30:35.448Z","database_specific":{"cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90790.json","cna_assigner":"VulDB"},"references":[{"type":"WEB","url":"https://github.com/a2aproject/a2a-python/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90790.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90790"},{"type":"ADVISORY","url":"https://vuldb.com/cve/CVE-2026-90790"},{"type":"ADVISORY","url":"https://vuldb.com/submit/919747"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/403296"},{"type":"REPORT","url":"https://vuldb.com/vuln/403296/cti"},{"type":"FIX","url":"https://github.com/a2aproject/a2a-python/pull/1164"},{"type":"FIX","url":"https://github.com/a2aproject/a2a-python/pull/1169"},{"type":"FIX","url":"https://github.com/a2aproject/a2a-python/releases/tag/v1.1.4"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/a2aproject/a2a-python","events":[{"introduced":"96c14b79325c72560359ad112998c0c09ed0b249"},{"fixed":"2d4d3048b245d2af854bad804f0e722ea9febc08"}],"database_specific":{"extracted_events":[{"introduced":"1.1.0"},{"last_affected":"1.1.0"},{"introduced":"1.1.1"},{"last_affected":"1.1.1"},{"introduced":"1.1.2"},{"last_affected":"1.1.2"},{"introduced":"1.1.3"},{"last_affected":"1.1.3"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["1.1.0","1.1.1","1.1.2","1.1.3","v1.1.3","v1.1.2","v1.1.1","v1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90790.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}