CVE-2026-50740
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 missing sanitisation vulnerability of user input in the zone-include.php script exists in Revive Adserver 6.0.7 and earlier. A low‑privileged user could exploit the refresh parameter of the iFrame invocation tag to perform reflected XSS attacks.
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 confidenceA reflected XSS vulnerability in Revive Adserver's zone-include.php script allows low-privileged users to inject malicious JavaScript through the refresh parameter of the iFrame invocation tag due to missing input sanitization.
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< 6.0.8CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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.
-
Locate Revive Adserver installationSearch for the 'zone-include.php' file in your web root directories, typically found under /www/ or /htdocs/ in paths like /ads/ or /adserver/Affected if The zone-include.php file exists in your web directory structure
-
Identify installed Revive Adserver versionCheck the version file (usually named 'version.php' in the '/var/' or '/lib/' directory of the installation) or log into the admin dashboard and view the system information pageAffected if The version is displayed as lower than 6.0.8 or the file shows a version number < 6.0.8
-
Verify zone-include.php handles refresh parameterOpen zone-include.php and search for code that processes the 'refresh' parameter, typically using $_GET['refresh'] or $_REQUEST['refresh'] without sanitization functions like htmlspecialchars() or paramaterized queriesAffected if The script retrieves the refresh parameter directly from user input without applying input validation or output encoding
-
Confirm iFrame invocation tag is accessibleCheck if the affected zone-include.php is accessible via web browser (e.g., /ads/zone-include.php?zoneid=1&refresh=...) and that low-privileged users have permission to generate invocation tagsAffected if The vulnerable script is web-accessible and users with low privileges can create or modify invocation tags
You are affected if Revive Adserver version is below 6.0.8 and the zone-include.php script processes the refresh parameter without sanitization, allowing injected JavaScript through the iFrame invocation tag.
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 · scoped6.0.8
Upgrade to a patched version of Revive Adserver, or implement proper input validation and sanitization on the refresh parameter in zone-include.php to neutralize malicious script execution.
6.0.8
- Download Revive Adserver version 6.0.8 or later from the official repository
- Backup your current Revive Adserver installation and database
- Extract the new version files
- Replace the existing installation files with the new version
- Run any database migration scripts included in the upgrade
- Verify the zone-include.php script has been updated in the new version
- Test that the XSS vulnerability in the refresh parameter is no longer exploitable
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-50740 — 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-2026-50740 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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