CVE-2026-113706

a2aproject a2a-rs inmemory.rs information disclosure

State: Published
Severity: 5.1 Medium
Published: Oct 20, 2026
Updated: Oct 27, 2026
Reserved: Oct 20, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X	VulDB
3.1	3.5 Low	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C	VulDB
3.0	3.5 Low	CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C	VulDB
2.0	4.0 Medium	AV:N/AC:L/Au:S/C:P/I:N/A:N/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-200 Information Disclosure
CWE-284 Improper Access Controls

Affected Products

Product	Versions
a2a-rsa2aproject	0.4.0Affected 0.4.1Affected 0.4.2Affected 0.4.3Affected

References

VDB-422868 | a2aproject a2a-rs inmemory.rs information disclosurevdb-entrytechnical-description
VDB-422868 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-113706 | CVE Analysis and Reportthird-party-advisory
Submit #1015040 | a2aproject a2a-rs a2a-server-lf ≤ 0.4.3 CWE-200third-party-advisory
https://github.com/a2aproject/a2a-rs/pull/122issue-trackingpatch
https://github.com/a2aproject/a2a-rs/commit/68f1b7e772ae5d6c9e581ac9b48bcddd10fe70ebpatch
https://github.com/a2aproject/a2a-rs/product

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.