DrupalCMS
CVE-2020-13662
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedOpen Redirect vulnerability in Drupal Core allows a user to be tricked into visiting a specially crafted link which would redirect them to an arbitrary external URL. This issue affects: Drupal Drupal Core 7 version 7.70 and prior versions.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceOpen Redirect vulnerability in Drupal Core 7.70 and prior allows attackers to craft malicious URLs that redirect authenticated or unauthenticated users to arbitrary external websites, potentially facilitating phishing or credential theft attacks.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
DrupalCMS
>= 7.0, <= 7.70CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Drupal 7 is installedCheck your web server document root for Drupal installation. Look for directories like 'sites/', 'modules/', 'themes/' and the presence of 'index.php' with Drupal bootstrap code. Alternatively, check the 'CHANGELOG.txt' or 'CORE.txt' file in the Drupal root directory.Affected if Drupal 7.x core is present in the environment
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Identify the installed Drupal versionIn the Drupal root directory, examine the 'CHANGELOG.txt' file which lists the version at the top, or check the 'includes/bootstrap.inc' file for the '$version' variable. You can also query the database: SELECT * FROM system WHERE name = 'system' AND type = 'module'; or check the 'system' table for version information.Affected if The installed version is 7.70 or lower (7.0 through 7.70)
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Verify the open redirect attack surface existsThis vulnerability affects the URL redirect functionality in Drupal's internal link processing. Test by attempting a redirect to an external domain using a crafted URL such as /?q=http://example.com or /?destination=http://example.com. Check if Drupal permits redirection to external domains without warning.Affected if Redirection to external URLs is permitted without user warning or confirmation
You are affected if Drupal 7.70 or earlier is installed and allows redirects to external domains without validation.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate Drupal Core to a version newer than 7.70 that includes the security patch for this vulnerability.
Fix this in Drupal
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-13662 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2020-13662 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data