CVE-2026-82664Public exploitNetwork attack vectorHinoki check available

Reflected XSS via raw JSON-LD script output

Published Aug 31, 2026 · Updated Aug 31, 2026

Reflected XSS in Yao Jingang GEOFlow 2.0 and 2.1.0 allows remote attackers to execute script via the public homepage search parameter. HomeController copies search into page metadata, and theme templates emit that JSON-LD through raw json_encode output with unescaped slashes, leaving a literal closing script tag executable. A victim must follow the crafted URL; the injected script then runs in the GEOFlow origin with the browser session's same-origin access.

CVSS severity4.3
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Reflected XSS in Yao Jingang GEOFlow 2.0 and 2.1.0 allows remote attackers to execute script via the public homepage search parameter. HomeController copies search into page metadata, and theme templates emit that JSON-LD through raw json_encode output with unescaped slashes, leaving a literal closing script tag executable. A victim must follow the crafted URL; the injected script then runs in the GEOFlow origin with the browser session's same-origin access.

The record

CVE
CVE-2026-82664
Published
Aug 31, 2026
Updated
Aug 31, 2026
Vendor
Yao Jingang
Product
GEOFlow
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 31, 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=2.0
  2. Affected versionversion=2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Yao Jingang · GEOFlowversion=2.0; version=2.1.0

Published CVSS scores

4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

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
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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