TI-2026-81638 Aliases CVE-2026-118271 GHSA-42fj-5gr6-hr6m

Uncontrolled resource consumption in a2ui data-context Resolver

MEDIUM 57CWE-400Published 2026-10-28 · Updated 2026-11-03

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-400.

Summary

The a2ui-project a2ui package from 0.10.0 up to and including 0.10.6 has an uncontrolled resource consumption flaw (CWE-400) in an unspecified function of the data-context Resolver in data-context.ts. A remote attacker with low privileges can drive resource consumption, which affects availability. The exploit has been publicly disclosed, and an exploit link is listed in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

A security vulnerability has been detected in a2ui-project a2ui up to 0.10.6. This impacts an unknown function of the file renderers/web_core/src/v0_9/rendering/data-context.ts of the component data-context Resolver. Such manipulation leads to resource consumption. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The name of the patch is eb314e14fabd29cfb4a74e1202afc4fe2081efa2. Applying a patch is advised to resolve this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0031 23rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
a2ui-project	a2ui	0.10.0; 0.10.1; 0.10.2; 0.10.3; 0.10.4; 0.10.5; 0.10.6	—	No fix listed	CNA

a2ui Vendora2ui-project Affected 0.10.0; 0.10.1; 0.10.2; 0.10.3; 0.10.4; 0.10.5; 0.10.6 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:a2ui-project:a2ui::::::::	—	—	—

cpe:2.3:a:a2ui-project:a2ui:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

The sources list no fixed version for a2ui. The source advises applying patch eb314e14fabd29cfb4a74e1202afc4fe2081efa2.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

2026-10-28 Threatist record created from CVE-2026-118271
2026-10-28 Alias added: GHSA-42fj-5gr6-hr6m
2026-11-03 CISA SSVC decision points changed
2026-11-03 Priority changed: LOW → MEDIUM

References

Exploit 1

https://github.com/a2ui-project/a2ui/issues/2384

Patch 2

Other 1

https://github.com/a2ui-project/a2ui/

TI-2026-81673 Uncontrolled resource consumption in a2ui Resolver CVSS 4.0MEDIUM 6.9
TI-2026-81667 Uncontrolled resource consumption in a2ui Binder component CVSS 4.0MEDIUM 5.3
TI-2026-81657 Resource consumption in a2ui-project a2ui DataModel.set CVSS 4.0MEDIUM 5.3
TI-2026-81656 Error message exposes information in a2ui-project a2ui CVSS 4.0MEDIUM 5.3
TI-2026-81674 Uncontrolled resource consumption in a2ui expression parser CVSS 4.0MEDIUM 5.1
TI-2026-62216 a2ui-project a2ui Basic Catalog safe_regex.ts redos CVSS 4.0MEDIUM 6.9

See all 14 →

Sources

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