CVE-2026-92356 Details
Description
A vulnerability was determined in a2ui-project a2ui 0.9/0.9.1. This issue affects the function updateComponents of the file basic_functions.ts of the component Update Components. Executing a manipulation can lead to resource consumption. The attack can be launched remotely. The project was informed of the problem early through an issue report but has not responded yet.
A vulnerability in the A2UI project, specifically in versions 0.9 and 0.9.1, has been identified. The issue resides in the 'updateComponents' function within 'basic_functions.ts', part of the 'Update Components' feature. This vulnerability allows for unbounded resource consumption, as it does not limit the size of component arrays that can be sent by agents. The problem can be exploited remotely, leading to increased memory usage and CPU time during a session, causing gradual performance degradation.
It is recommended to cap the number of components per message and per surface to prevent unbounded growth. Additionally, replacing the current caching mechanism for number formatting with a least-recently-used (LRU) bound cache and indexing notification paths to avoid quadratic processing can help mitigate the issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 16, 2026CISA-ADP
Assessed Sep 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/a2ui-project/a2ui/ | [email protected] | ProductSource CodeVendor |
| https://github.com/a2ui-project/a2ui/issues/2298 | [email protected] | ExploitIssue TrackingRemedyTechnical DescriptionVendor |
| https://vuldb.com/cve/CVE-2026-92356 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/934117 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/405443 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/405443/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| a2ui-project a2ui | 0.9 0.9.1 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 16, 2026 | CVE Modified | CISA-ADP |
| Sep 16, 2026 | New CVE Received | [email protected] |