CVE-2020-36653Network attack vector

Browser script execution via error parameter

Published Jan 18, 2023 · Updated Aug 4, 2024

Cross-site scripting in GENI Portal's error-text.php allows remote attackers to run script in a user's browser via the error parameter. The endpoint URL-decodes the error query value and echoes it after htmlentities uses default flags that omit single-quote encoding and explicit UTF-8/HTML5 handling. The script runs in the portal origin and can alter displayed content; a victim must load the crafted response, and published assessments disagree about authentication.

CVSS severity6.1
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in GENI Portal's error-text.php allows remote attackers to run script in a user's browser via the error parameter. The endpoint URL-decodes the error query value and echoes it after htmlentities uses default flags that omit single-quote encoding and explicit UTF-8/HTML5 handling. The script runs in the portal origin and can alter displayed content; a victim must load the crafted response, and published assessments disagree about authentication.

The record

CVE
CVE-2020-36653
Published
Jan 18, 2023
Updated
Aug 4, 2024
Vendor
Global Environment for Network Innovations (GENI)
Product
GENI Portal
Classifications
CWE-79, T1203
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Global Environment for Network Innovations (GENI) · GENI Portalversion=n/a

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/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.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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