CVE-2026-19485Network attack vector

Staged data read/write via predictable bucket names

Published Aug 26, 2026 · Updated Aug 26, 2026

Predictable resource naming in Google AI Commerce Search before 2026-04-27 allows remote authenticated users to read or write staged data. BigQuery Import Staging derives bucket names predictably from the victim's project number, allowing attackers to pre-create the expected bucket and receive staged data and error logs. Exploitation requires a Google Cloud identity and the victim's project number; successful bucket squatting compromises staged-data confidentiality and integrity without interrupting the service.

CVSS severity9.3
Critical
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Predictable resource naming in Google AI Commerce Search before 2026-04-27 allows remote authenticated users to read or write staged data. BigQuery Import Staging derives bucket names predictably from the victim's project number, allowing attackers to pre-create the expected bucket and receive staged data and error logs. Exploitation requires a Google Cloud identity and the victim's project number; successful bucket squatting compromises staged-data confidentiality and integrity without interrupting the service.

The record

CVE
CVE-2026-19485
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
Google Cloud
Product
AI Commerce Search
Classifications
CWE-330, CAPEC-616, T1583.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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 <2026-04-27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Google Cloud · AI Commerce Searchversion=0 <2026-04-27

Published CVSS scores

9.3Google CloudCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
CAPEC-616Establish Rogue Location
T1583.006Web Services

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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