CVE-2026-9109Public exploitNetwork attack vector

Unauthenticated stored XSS via exposed REST API key

Published Jun 13, 2026 · Updated Jun 13, 2026

Stored cross-site scripting in GPTranslate 2.31 and earlier allows remote attackers to inject scripts through the translation REST API. The request endpoint stores translation payloads without sufficient input sanitization or output escaping, while every page exposes the SHA-256 site-URL API key as gptApiKey. No authentication is required: a visitor can recover the key, submit a malicious translation, and cause the script to run when an injected page is viewed.

CVSS severity7.2
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in GPTranslate 2.31 and earlier allows remote attackers to inject scripts through the translation REST API. The request endpoint stores translation payloads without sufficient input sanitization or output escaping, while every page exposes the SHA-256 site-URL API key as gptApiKey. No authentication is required: a visitor can recover the key, submit a malicious translation, and cause the script to run when an injected page is viewed.

The record

CVE
CVE-2026-9109
Published
Jun 13, 2026
Updated
Jun 13, 2026
Vendor
JExtensions Store
Product
GPTranslate
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 13, 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 <=2.31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JExtensions Store · GPTranslateversion=0 <=2.31

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1189Drive-by Compromise

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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