Medium 6.3Published Sep 14, 2026

CVE-2026-90790a2aproject a2a-python Push Notification Sender base_push_notification_sender.py _dispatch_notification server-side request forgery

Updated under an hour ago (2026-10-19 08:50 UTC)

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Every CVE for a2aproject a2a-python

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CNA)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
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Sep 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

a2aproject a2a-python a2aproject:a2a-python	1.1.0; 1.1.1; 1.1.2; 1.1.3; 1.1.4 not affected	CNA record

References

https://vuldb.com/vuln/403296vdb-entry, technical-description
https://vuldb.com/vuln/403296/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-90790third-party-advisory
https://vuldb.com/submit/919747third-party-advisory
https://github.com/a2aproject/a2a-python/pull/1164issue-tracking, patch
https://github.com/a2aproject/a2a-python/pull/1169issue-tracking, patch
https://github.com/a2aproject/a2a-python/releases/tag/v1.1.4patch
https://github.com/a2aproject/a2a-python/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.