CVE-2026-113704a2aproject a2a-rs Push Notification push_notification_sender.rs HttpPushSender server-side request forgery

Description

A vulnerability has been found in a2aproject a2a-rs up to 0.4.3. This affects the function HttpPushSender of the file crates/server/src/push_notification_sender.rs of the component Push Notification Handler. Such manipulation of the argument TaskPushNotificationConfig leads to server-side request forgery. The attack may be launched remotely. The name of the patch is 2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224. Applying a patch is advised to resolve this issue.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• VDB-422865 | a2aproject a2a-rs Push Notification push_notification_sender.rs HttpPushSender server-side request forgery vdb-entrytechnical-description
• VDB-422865 | CTI Indicators (IOB, IOC, IOA) signaturepermissions-required
• CVE-2026-113704 | CVE Analysis and Report third-party-advisory
• Submit #1014883 | a2aproject a2a-rs a2a-server-lf ≤ 0.4.3 SSRF third-party-advisory
• https://github.com/a2aproject/a2a-rs/pull/124 issue-trackingpatch
• https://github.com/a2aproject/a2a-rs/commit/2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224 patch
• https://github.com/a2aproject/a2a-rs/ product