CVE-2026-2472Public exploitNetwork attack vector

Stored JavaScript execution via unescaped evaluation JSON

Published Feb 20, 2026 · Updated Feb 20, 2026

Stored XSS in Google Vertex AI SDK for Python 1.98.0 through 1.130.0 allows remote attackers to run JavaScript in Jupyter or Colab. The _get_evaluation_html, _get_comparison_html, and _get_inference_html helpers embed attacker-controlled JSON in inline script blocks without script-context escaping. Execution occurs when a victim renders evaluation results or dataset data containing a script-closing sequence, granting the injected JavaScript the notebook page's browser context.

CVSS severity8.6
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Google Vertex AI SDK for Python 1.98.0 through 1.130.0 allows remote attackers to run JavaScript in Jupyter or Colab. The _get_evaluation_html, _get_comparison_html, and _get_inference_html helpers embed attacker-controlled JSON in inline script blocks without script-context escaping. Execution occurs when a victim renders evaluation results or dataset data containing a script-closing sequence, granting the injected JavaScript the notebook page's browser context.

The record

CVE
CVE-2026-2472
Published
Feb 20, 2026
Updated
Feb 20, 2026
Vendor
Go standard library
Product
Vertex AI SDK for Python
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 20, 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=1.98.0 <1.131.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Vertex AI SDK for Pythonversion=1.98.0 <1.131.0

Published CVSS scores

8.6GoogleCloudCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

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.

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

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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