CVE-2026-113706: a2aproject a2a-rs inmemory.rs information disclosure
A vulnerability was identified in a2aproject a2a-rs up to 0.4.3. Impacted is an unknown function of the file a2a-server/src/taskstore/inmemory.rs. The manipulation of the argument historyLength leads to information disclosure. The attack is possible to be carried out remotely. The identifier of the patch is 68f1b7e772ae5d6c9e581ac9b48bcddd10fe70eb. To fix this issue, it is recommended to deploy a patch.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
a2aproject/a2a-rsto a version that resolves this vulnerability.Patch 68f1b7e772ae5d6c9e581ac9b48bcddd10fe70eb
Event History
Frequently Asked Questions
Which deployments are affected?
a2aproject a2a-rs versions up to and including 0.4.3 are identified as impacted. The affected code is in a2a-server/src/task_store/inmemory.rs.
What access and conditions are required for exploitation?
The issue can be exploited remotely through manipulation of the historyLength argument. The supplied vector indicates that the attacker requires low privileges and user interaction.
What should teams do if they use an affected version?
Deploy the patch identified as 68f1b7e772ae5d6c9e581ac9b48bcddd10fe70eb. The provided data does not specify an alternative mitigation for environments that cannot patch immediately.