CVE-2020-26166
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 · uneditedThe file upload functionality in qdPM 9.1 doesn't check the file description, which allows remote authenticated attackers to inject web script or HTML via the attachments info parameter, aka XSS. This can occur during creation of a ticket, project, or task.
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 confidenceqdPM 9.1 file upload functionality fails to sanitize the attachments info parameter (file description), allowing authenticated users to inject malicious HTML or JavaScript via this field during ticket, project, or task creation. This stored XSS executes when other users view the affected content.
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= 9.1CVSS 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.
-
Identify the installed qdPM versionLocate the version file or admin panel that displays the software version. Common locations include a version.php file, README file, or the admin dashboard. Compare this to the affected version: 9.1Affected if The installed version is exactly qdPM 9.1
-
Confirm authenticated user access to attachment uploadsLog in as a standard authenticated user (non-admin) and navigate to the ticket creation, project creation, or task creation pages. Verify that an attachment upload feature with a description field is present and accessibleAffected if Authenticated users can access the attachment upload form with a description/info field for tickets, projects, or tasks
-
Test for unescaped output in attachment descriptionsCreate a test ticket, project, or task with an attachment. In the file description field, inject a benign HTML payload such as <script>alert('XSS')</script> or <img src=x onerror=alert(1)>. Save the item, then view it as a different user or in a different session. Check if the payload executes or renders as raw HTMLAffected if The injected HTML or JavaScript executes or renders unescaped when other users view the attachment description
You are affected if running qdPM version 9.1 and the attachment description field accepts and displays HTML/JavaScript without encoding to 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.
From vendor dataImplement input validation and output encoding on the file description parameter in all upload paths (tickets, projects, tasks). Sanitize or strip HTML/script tags from user-supplied attachment descriptions before storage and apply contextual output encoding when rendering.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-26166 — 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-2020-26166 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