CVE-2020-35723Network attack vector

Authenticated reflected XSS via referer parameter

Published Jan 11, 2021 · Updated Aug 4, 2024

Reflected XSS in Quest Policy Authority 8.1.2.200 allows remote authenticated users to inject script into a browser via a crafted link. The ReportPreview.do endpoint reflects the HTTP referer parameter into generated HTML without neutralizing script content, so a victim who follows the link executes attacker-controlled code in the application origin. Exploitation requires a logged-in user to activate the link; the documented consequence is browser-side script execution with possible limited data access or actions under that user's session, and the affected release is unsupported.

CVSS severity5.4
Medium
EPSS probability1.26%
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 Quest Policy Authority 8.1.2.200 allows remote authenticated users to inject script into a browser via a crafted link. The ReportPreview.do endpoint reflects the HTTP referer parameter into generated HTML without neutralizing script content, so a victim who follows the link executes attacker-controlled code in the application origin. Exploitation requires a logged-in user to activate the link; the documented consequence is browser-side script execution with possible limited data access or actions under that user's session, and the affected release is unsupported.

The record

CVE
CVE-2020-35723
Published
Jan 11, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 11, 2021CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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