CVE-2020-20070Public exploitNetwork attack vector

Script execution via reflected surveyId input

Published Jun 20, 2023 · Updated Dec 11, 2024

Reflected XSS in DWSurvey 1.0 allows remote attackers to execute script in a user's browser through a crafted survey-result URL. The qu-multi-fillblank!answers.action result handler returns the surveyId query value without effective XSS filtering, allowing injected markup to reach browser parsing. Exploitation requires a user to open the crafted result URL; script runs in that user's DWSurvey origin and can access browser-visible data such as cookies.

CVSS severity6.1
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in DWSurvey 1.0 allows remote attackers to execute script in a user's browser through a crafted survey-result URL. The qu-multi-fillblank!answers.action result handler returns the surveyId query value without effective XSS filtering, allowing injected markup to reach browser parsing. Exploitation requires a user to open the crafted result URL; script runs in that user's DWSurvey origin and can access browser-visible data such as cookies.

The record

CVE
CVE-2020-20070
Published
Jun 20, 2023
Updated
Dec 11, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 11, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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')

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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