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6 vulnerabilities by a2aproject
CVE-2026-90820 (GCVE-0-2026-90820)
Vulnerability from nvd – Published: 2026-09-14 20:45 – Updated: 2026-09-15 13:55 X_Open Source
VLAI
EPSS
VEX
Title
a2aproject a2a-java AuthorizationRequestHandlerDecorator.java AuthorizationRequestHandlerDecorator.onListTasks authorization
Summary
A security vulnerability has been detected in a2aproject a2a-java 1.2.0. The impacted element is the function AuthorizationRequestHandlerDecorator.onListTasks of the file server-common/src/main/java/org/a2aproject/sdk/server/requesthandlers/AuthorizationRequestHandlerDecorator.java. Such manipulation leads to missing authorization. The attack can be launched remotely. Upgrading to version 1.3.0 is sufficient to resolve this issue. The name of the patch is e9a1abf9c90c02b16d17293afdc3cc2f555d63a6. The affected component should be upgraded.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 13:32 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/403323 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/403323/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90820 | third-party-advisory |
| https://vuldb.com/submit/925152 | third-party-advisory |
| https://github.com/a2aproject/a2a-java/pull/1038 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-java/commit/e9a… | patch |
| https://github.com/a2aproject/a2a-java/releases/t… | patch |
| https://github.com/a2aproject/a2a-java/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| a2aproject | a2a-java |
Affected:
1.2.0
Unaffected: 1.3.0 cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:* |
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CVE-2026-90819 (GCVE-0-2026-90819)
Vulnerability from nvd – Published: 2026-09-14 20:30 – Updated: 2026-09-15 14:25 X_Open Source
VLAI
EPSS
VEX
Title
a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting
Summary
A weakness has been identified in a2aproject a2a-java 1.2.0. The affected element is the function BasePushNotificationSender.dispatchNotification of the file server-common/src/main/java/org/a2aproject/sdk/server/tasks/BasePushNotificationSender.java of the component Authorization Header Construction. This manipulation causes http response splitting. The attack can be initiated remotely. Upgrading to version 1.3.0 is sufficient to fix this issue. Patch name: 247a655043f145f6f8e3853724b6a543eaa02001. You should upgrade the affected component.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 14:25 UTC
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/403322 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/403322/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90819 | third-party-advisory |
| https://vuldb.com/submit/922996 | third-party-advisory |
| https://github.com/a2aproject/a2a-java/pull/1043 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-java/pull/1053 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-java/commit/247… | patch |
| https://github.com/a2aproject/a2a-java/releases/t… | patch |
| https://github.com/a2aproject/a2a-java/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| a2aproject | a2a-java |
Affected:
1.2.0
Unaffected: 1.3.0 cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:* |
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CVE-2026-90790 (GCVE-0-2026-90790)
Vulnerability from nvd – Published: 2026-09-14 14:30 – Updated: 2026-09-15 13:56
VLAI
EPSS
VEX
Title
a2aproject a2a-python Push Notification Sender base_push_notification_sender.py _dispatch_notification server-side request forgery
Summary
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 13:33 UTC
CWE
- CWE-918 - Server-Side Request Forgery
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/403296 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/403296/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90790 | third-party-advisory |
| https://vuldb.com/submit/919747 | third-party-advisory |
| https://github.com/a2aproject/a2a-python/pull/1164 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-python/pull/1169 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-python/releases… | patch |
| https://github.com/a2aproject/a2a-python/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| a2aproject | a2a-python |
Affected:
1.1.0
Affected: 1.1.1 Affected: 1.1.2 Affected: 1.1.3 Unaffected: 1.1.4 cpe:2.3:a:a2aproject:a2a-python:*:*:*:*:*:*:*:* |
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CVE-2026-90820 (GCVE-0-2026-90820)
Vulnerability from cvelistv5 – Published: 2026-09-14 20:45 – Updated: 2026-09-15 13:55 X_Open Source
VLAI
EPSS
VEX
Title
a2aproject a2a-java AuthorizationRequestHandlerDecorator.java AuthorizationRequestHandlerDecorator.onListTasks authorization
Summary
A security vulnerability has been detected in a2aproject a2a-java 1.2.0. The impacted element is the function AuthorizationRequestHandlerDecorator.onListTasks of the file server-common/src/main/java/org/a2aproject/sdk/server/requesthandlers/AuthorizationRequestHandlerDecorator.java. Such manipulation leads to missing authorization. The attack can be launched remotely. Upgrading to version 1.3.0 is sufficient to resolve this issue. The name of the patch is e9a1abf9c90c02b16d17293afdc3cc2f555d63a6. The affected component should be upgraded.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 13:32 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/403323 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/403323/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90820 | third-party-advisory |
| https://vuldb.com/submit/925152 | third-party-advisory |
| https://github.com/a2aproject/a2a-java/pull/1038 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-java/commit/e9a… | patch |
| https://github.com/a2aproject/a2a-java/releases/t… | patch |
| https://github.com/a2aproject/a2a-java/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| a2aproject | a2a-java |
Affected:
1.2.0
Unaffected: 1.3.0 cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:* |
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CVE-2026-90819 (GCVE-0-2026-90819)
Vulnerability from cvelistv5 – Published: 2026-09-14 20:30 – Updated: 2026-09-15 14:25 X_Open Source
VLAI
EPSS
VEX
Title
a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting
Summary
A weakness has been identified in a2aproject a2a-java 1.2.0. The affected element is the function BasePushNotificationSender.dispatchNotification of the file server-common/src/main/java/org/a2aproject/sdk/server/tasks/BasePushNotificationSender.java of the component Authorization Header Construction. This manipulation causes http response splitting. The attack can be initiated remotely. Upgrading to version 1.3.0 is sufficient to fix this issue. Patch name: 247a655043f145f6f8e3853724b6a543eaa02001. You should upgrade the affected component.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 14:25 UTC
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/403322 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/403322/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90819 | third-party-advisory |
| https://vuldb.com/submit/922996 | third-party-advisory |
| https://github.com/a2aproject/a2a-java/pull/1043 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-java/pull/1053 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-java/commit/247… | patch |
| https://github.com/a2aproject/a2a-java/releases/t… | patch |
| https://github.com/a2aproject/a2a-java/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| a2aproject | a2a-java |
Affected:
1.2.0
Unaffected: 1.3.0 cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:* |
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CVE-2026-90790 (GCVE-0-2026-90790)
Vulnerability from cvelistv5 – Published: 2026-09-14 14:30 – Updated: 2026-09-15 13:56
VLAI
EPSS
VEX
Title
a2aproject a2a-python Push Notification Sender base_push_notification_sender.py _dispatch_notification server-side request forgery
Summary
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
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 13:33 UTC
CWE
- CWE-918 - Server-Side Request Forgery
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/403296 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/403296/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-90790 | third-party-advisory |
| https://vuldb.com/submit/919747 | third-party-advisory |
| https://github.com/a2aproject/a2a-python/pull/1164 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-python/pull/1169 | issue-trackingpatch |
| https://github.com/a2aproject/a2a-python/releases… | patch |
| https://github.com/a2aproject/a2a-python/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| a2aproject | a2a-python |
Affected:
1.1.0
Affected: 1.1.1 Affected: 1.1.2 Affected: 1.1.3 Unaffected: 1.1.4 cpe:2.3:a:a2aproject:a2a-python:*:*:*:*:*:*:*:* |
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