CVE-2020-1723Network attack vector

Open redirect via unchecked logout parameter

Published Jan 28, 2021 · Updated Aug 4, 2024

Open redirect in Louketo Proxy 6.0.1 and 7.0.0 allows remote attackers to send logged-in users to arbitrary sites. The logout handler reads the redirect query parameter and passes it directly to the HTTP redirect routine without validating its destination. Exploitation requires a logged-in user to follow a crafted logout link and supports phishing through a trusted proxy origin.

CVSS severity6.1
Medium
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Louketo Proxy 6.0.1 and 7.0.0 allows remote attackers to send logged-in users to arbitrary sites. The logout handler reads the redirect query parameter and passes it directly to the HTTP redirect routine without validating its destination. Exploitation requires a logged-in user to follow a crafted logout link and supports phishing through a trusted proxy origin.

The record

CVE
CVE-2020-1723
Published
Jan 28, 2021
Updated
Aug 4, 2024
Vendor
Louketo
Product
Louketo Proxy
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0.1
  2. Affected versionversion=7.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Louketo · Louketo Proxyversion=6.0.1; version=7.0.0

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.8NVDAV:N/AC:M/Au:N/C:P/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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