{"id":"CVE-2026-90790","aliases":["EUVD-2026-77535","GHSA-33c5-chm5-2ggp"],"status":"published","title":"a2aproject a2a-python Push Notification Sender base_push_notification_sender.py _dispatch_notification server-side request forgery","description":"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.","severity":{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00374,"percentile":0.31702,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2026-09-14T14:30:35Z","modified":"2026-10-28T02:31:02Z","products":[{"vendor":"a2aproject","product":"a2a-python"}],"references":[{"url":"https://vuldb.com/vuln/403296","tags":["vdb-entry","technical-description","advisory"]},{"url":"https://vuldb.com/vuln/403296/cti","tags":["signature","permissions-required","report"]},{"url":"https://vuldb.com/cve/CVE-2026-90790","tags":["third-party-advisory","advisory"]},{"url":"https://vuldb.com/submit/919747","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/a2aproject/a2a-python/pull/1164","tags":["issue-tracking","patch","fix"]},{"url":"https://github.com/a2aproject/a2a-python/pull/1169","tags":["issue-tracking","patch","fix"]},{"url":"https://github.com/a2aproject/a2a-python/releases/tag/v1.1.4","tags":["patch","fix"]},{"url":"https://github.com/a2aproject/a2a-python/","tags":["product","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90790","tags":["advisory"]},{"url":"https://github.com/a2aproject/a2a-python"},{"url":"https://github.com/advisories/GHSA-33c5-chm5-2ggp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90790.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-90790","title":"a2aproject a2a-python Push Notification Sender base_push_notification_sender.py _dispatch_notification server-side request forgery","description":"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.","status":"published","published":"2026-09-14T14:30:35.448Z","modified":"2026-09-15T13:56:53.326Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":6.3,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.0","score":6.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C","level":"medium","assessor":"cna"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T13:45:47.885058Z"}],"euvd":[{"id":"EUVD-2026-77535","description":"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.","status":"published","published":"2026-09-14T14:30:35Z","modified":"2026-09-15T13:56:53Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:28:18.438671Z"}],"ghsa":[{"id":"GHSA-33c5-chm5-2ggp","title":"A security vulnerability has been detected in a2aproject a2a-python up to 1.1.3. This affects the...","description":"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.","status":"published","published":"2026-09-14T15:32:49Z","modified":"2026-09-14T15:32:57Z","cvss":[{"version":"4.0","score":5.3,"vector":"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/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","level":"medium"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:11:50.762382Z"}],"nvd":[{"id":"CVE-2026-90790","description":"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.","status":"published","published":"2026-09-14T15:17:13.2Z","modified":"2026-09-15T14:17:35.557Z","cvss":[{"version":"4.0","score":5.3,"vector":"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/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","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:12:46.980627Z"}],"osv":[{"id":"CVE-2026-90790","title":"a2aproject a2a-python Push Notification Sender base_push_notification_sender.py _dispatch_notification server-side request forgery","description":"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.","status":"published","published":"2026-09-14T14:30:35.448Z","modified":"2026-10-28T02:31:02.227151619Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:45:20.269367Z"}]}}