CVE-2026-81867Network attack vector

Authenticated code execution via JavaScript Task guard bypass

Published Sep 28, 2026 · Updated Sep 28, 2026

Deserialization in Google Cloud Application Integration before 2026-06-28 lets remote authenticated users run code on shared production servers. The JavaScript Task accepts a specially crafted script that bypasses its parameter guards; Google has not disclosed the specific deserialization code path. Standard Application Integration permissions suffice, and execution occurs on Google-managed shared servers rather than a customer-managed host.

CVSS severity9.4
Critical
EPSS probability0.36%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in Google Cloud Application Integration before 2026-06-28 lets remote authenticated users run code on shared production servers. The JavaScript Task accepts a specially crafted script that bypasses its parameter guards; Google has not disclosed the specific deserialization code path. Standard Application Integration permissions suffice, and execution occurs on Google-managed shared servers rather than a customer-managed host.

The record

CVE
CVE-2026-81867
Published
Sep 28, 2026
Updated
Sep 28, 2026
Vendor
Google Cloud
Product
Application Integration
Classifications
CWE-502, CAPEC-253, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026-06-28

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Google Cloud · Application Integrationversion=0 <2026-06-28

Published CVSS scores

9.4Google Cloud CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Clear

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CAPEC-253Remote Code Inclusion
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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