CVE-2020-13662Network attack vector

Open redirect via insufficient destination parameter validation

Published May 5, 2021 · Updated Aug 4, 2024

Open redirect in Drupal Core before 7.70 allows remote attackers to send users to arbitrary external URLs through crafted links. The drupal_goto() function insufficiently validates the untrusted destination query parameter before using it as a redirect target. Successful exploitation requires a user to follow the crafted link and results in navigation to an attacker-chosen external site.

CVSS severity6.1
Medium
EPSS probability0.86%
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 Drupal Core before 7.70 allows remote attackers to send users to arbitrary external URLs through crafted links. The drupal_goto() function insufficiently validates the untrusted destination query parameter before using it as a redirect target. Successful exploitation requires a user to follow the crafted link and results in navigation to an attacker-chosen external site.

The record

CVE
CVE-2020-13662
Published
May 5, 2021
Updated
Aug 4, 2024
Vendor
Drupal
Product
Drupal Core
Classifications
CWE-601, CAPEC-178, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 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=7 <=7.70

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Drupal · Drupal Coreversion=7 <=7.70

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.8NIST NVDAV: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')
CAPEC-178Cross-Site Flashing
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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