CVE-2017-20057
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 · uneditedA vulnerability classified as problematic has been found in Elefant CMS 1.3.12-RC. Affected is an unknown function. The manipulation of the argument username leads to basic cross site scripting (Persistent). It is possible to launch the attack remotely. Upgrading to version 1.3.13 is able to address this issue. It is recommended to upgrade the affected component.
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 confidenceA persistent cross-site scripting (XSS) vulnerability exists in Elefant CMS 1.3.12-RC where malicious script code can be injected into the username field. The unsanitized user input is stored and executed when other users view content displaying the username.
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= 1.3.12CVSS 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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Identify Elefant CMS versionCheck the version.php file in the CMS root directory or look for version information in the admin dashboard under System Information or About sectionAffected if The installed version is exactly 1.3.12 (1.3.12-RC)
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Confirm user registration or profile editing is accessibleNavigate to the registration page or user profile editing interface. Try to create a new user account or edit an existing username with a test script payload like <script>alert(1)</script>Affected if The application allows saving a username containing unsanitized HTML/JavaScript without validation or encoding
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Check where usernames are displayedLook for areas where usernames are rendered to other users, such as comment sections, user lists, author bylines, or recent activity feeds. View these pages as a different userAffected if Usernames are displayed to other users without proper output encoding, causing the stored script to execute
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Inspect stored user dataQuery the users table in the database to see if submitted usernames contain raw HTML tags. Run: SELECT username FROM users WHERE username LIKE '%<%'Affected if The database contains usernames with unescaped HTML characters that would execute if rendered in a browser
A user is affected if running Elefant CMS version 1.3.12 AND the application allows storing usernames with script tags that execute when viewed by other users.
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.
dbcve · scopedUpgrade Elefant CMS to version 1.3.13 or later to apply the security patch that addresses this XSS vulnerability.
1.3.13
- Create a full backup of the Elefant CMS database and all files
- Download Elefant CMS version 1.3.13 from the official Elefant CMS repository or website
- Extract the upgrade package to a temporary location
- Replace the existing Elefant CMS files with the new version 1.3.13 files, preserving custom configuration and user-uploaded content
- Run any provided database migration scripts if included in the upgrade package
- Verify the installation by logging in and checking that the username field now properly sanitizes input
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2017-20057 — 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-2017-20057 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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- 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