Information disclosure in A2aproject A2a-Rs
CVE-2026-113706
A vulnerability was identified in a2aproject a2a-rs up to 0.4.3. Impacted is an unknown function of the file a2a-server/src/task_store/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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- A2aproject A2a-Rs — versions 0.4.0, 0.4.1, 0.4.2
Weakness classification (CWE)
References
- vuldb.com/vuln/422868 (technical-description, vdb-entry)
- vuldb.com/vuln/422868/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-113706 (third-party-advisory)
- vuldb.com/submit/1015040 (third-party-advisory)
- github.com/a2aproject/a2a-rs/pull/122 (issue-tracking, patch)
- github.com/a2aproject/a2a-rs/commit/68f1b7e772ae5d6c9e581ac9b48bcddd10fe70eb (patch)
- github.com/a2aproject/a2a-rs/ (product)
Frequently asked questions
- What is CVE-2026-113706?
- CVE-2026-113706 is a low-severity vulnerability in A2aproject A2a-Rs, classified under Information Disclosure. CVSS score: 3.5/10. Published 2026-10-21.
- How severe is CVE-2026-113706?
- Low severity. CVSS v3 base score is 3.5 out of 10.