PhorumApplication

CVE-2007-0769

MEDIUM · 6.8 CVSS v2.0 Published 2007-02-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
77/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
Cross-site scripting (XSS) vulnerability in register.php in Phorum 5.1.18 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors. NOTE: the vendor disputes this vulnerability, stating that "The characters are escaped properly.

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 · moderate confidence

Cross-site scripting (XSS) vulnerability in register.php of Phorum 5.1.18 allows remote attackers to inject arbitrary web script or HTML through user registration inputs. The specific injection vectors are not detailed, but the vulnerability stems from improper input sanitization or output encoding in the registration form processing.

MitigationImplement proper input validation and output encoding on all user-supplied data in register.php to prevent XSS injection. Apply context-appropriate escaping (HTML entity encoding, URL encoding) before rendering user input in any part of the application.

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
PhorumApplication
Affected:= 5.1.18

CVSS 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
M
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/Au:N/C:P/I:P/A:P

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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm Phorum installation version
    Locate the version file or admin panel in the Phorum installation. Check the version identifier against 5.1.18. Typical version files include version.php, include/version.php, or the admin dashboard version display.
    Affected if The installed Phorum version is exactly 5.1.18
  2. Verify register.php exists
    Locate the register.php file in the web root or registration module directory of the Phorum installation. Check the file system for its presence.
    Affected if register.php exists in the Phorum web directory
  3. Confirm registration module is enabled
    Access the Phorum admin control panel and navigate to the settings or modules section. Check whether the user registration functionality or register module is enabled and accessible to new users.
    Affected if The registration feature is active and accessible to unauthenticated users
  4. Inspect registration form input handling
    Navigate to the registration page (register.php) in a web browser. View the page source to examine how form inputs handle user data. Check if the form submits to register.php and note what input fields are present (username, email, etc.).
    Affected if The registration form is accessible and accepts user input without visible sanitization

A user is affected if running Phorum version 5.1.18 with the registration module enabled and register.php accessible to end users.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper input validation and output encoding on all user-supplied data in register.php to prevent XSS injection. Apply context-appropriate escaping (HTML entity encoding, URL encoding) before rendering user input in any part of the application.

Fix this in Phorum Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2007-0769 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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
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