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TI-2026-81355 Aliases CVE-2026-117505GHSA-6435-vrpp-vvrc

Resource consumption in a2aproject a2a-java ChildQueue

Priority LOW 24CWE-400Published · Updated

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
Fixed

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

Summary

a2aproject a2a-java up to 1.2.0.Final is affected. A flaw in the queue.offer function of the ChildQueue component leads to uncontrolled resource consumption (CWE-400). A remote attacker with low privileges can manipulate the component to consume resources, with a low impact on availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

A security flaw has been discovered in a2aproject a2a-java up to 1.2.0.Final. The impacted element is the function queue.offer of the component ChildQueue. Performing a manipulation results in resource consumption. The attack can be initiated remotely. Upgrading to version 1.3.0.Final is sufficient to resolve this issue. The patch is named be663f806efcfdddd2805d214fae4998379ac5f2. It is advisable to upgrade the affected component.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0031 23rd percentileScored 2026-11-07
Fix Fixed a2a-java (a2aproject): 1.3.0.Final

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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

VendorProductAffected versionsFixed inStatusSource
a2aprojecta2a-java1.2.0.Final1.3.0.FinalPatch availableCNA
  • a2a-java Vendora2aproject Affected 1.2.0.Final Fixed in 1.3.0.Final Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:*——a2aproject
  • cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:* Versions — — ·a2aproject

Remediation

Upgrade a2aproject a2a-java to version 1.3.0.Final, which resolves the issue. The patch is named be663f806efcfdddd2805d214fae4998379ac5f2.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA a2a-java (a2aproject) Fixed in 1.3.0.Final

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-117505
  2. 2026-10-27 Alias added: GHSA-6435-vrpp-vvrc
  3. 2026-10-28 CISA SSVC decision points changed

References

Patch 3

Other 1

  • TI-2026-76905 Android A2A Java SDK forwards API keys across redirects CVSS 3.1HIGH 7.5
  • TI-2026-76904 A2A Java SDK default task store skips authorization on task reads CVSS 3.1HIGH 7.5
  • TI-2026-76847 Server-side request forgery in A2A Java SDK push notifications CVSS 3.1MEDIUM 5.8
  • TI-2026-81183 Resource consumption in a2aproject a2a-go REST SSE handler CVSS 4.0MEDIUM 6.9
  • TI-2026-61722 HTTP response splitting in a2aproject a2a-java CVSS 4.0MEDIUM 6.9
  • TI-2026-81185 Denial of service in a2aproject a2a-go Distributed Manager Cancel CVSS 4.0MEDIUM 6.9
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences