CVE-2021-28125Network attack vector

User redirection via unvalidated shortened URLs

Published Apr 27, 2021 · Updated Aug 3, 2024

Open redirect in Apache Superset 1.0.1 and earlier allows remote attackers to send users to external sites via crafted short URLs. The /r/shortner/ handler stores a user-supplied data value as models.Url without validation, and /r/ redirects to that stored destination. No authentication is required, but a user must follow the generated link; the redirect can support phishing or delivery of attacker-controlled content.

CVSS severity6.1
Medium
EPSS probability64.02%
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 Apache Superset 1.0.1 and earlier allows remote attackers to send users to external sites via crafted short URLs. The /r/shortner/ handler stores a user-supplied data value as models.Url without validation, and /r/ redirects to that stored destination. No authentication is required, but a user must follow the generated link; the redirect can support phishing or delivery of attacker-controlled content.

The record

CVE
CVE-2021-28125
Published
Apr 27, 2021
Updated
Aug 3, 2024
Vendor
The Apache Software Foundation
Product
Apache Superset
Classifications
CWE-601, T1566.002, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=Apache Superset <=1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Supersetversion=Apache Superset <=1.0.1

Published CVSS scores

5.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:N
6.1NVDCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Phishing: Spearphishing Link
T1204.001User Execution: Malicious Link

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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