EasydiscussApplication · Stackideas
CVE-2026-21624
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 · uneditedLack of input filterung leads to a persistent XSS vulnerability in the user avatar text handling of the Easy Discuss component for Joomla.
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 persistent (stored) cross-site scripting vulnerability exists in the Easy Discuss Joomla component due to insufficient input filtering in the user avatar text handling. Attackers can inject malicious JavaScript code through avatar text fields, which gets stored in the database and executed when other users view the affected profiles.
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
EasydiscussApplication
>= 1.0.0, <= 5.0.15CVSS 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.
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Identify Easydiscuss versionCheck the component version via Joomla administrator extensions manager, or inspect the easydiscuss.xml manifest file in the /administrator/components/com_easydiscuss/ directory for the <version> tagAffected if The version listed is between 1.0.0 and 5.0.15 inclusive
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Locate avatar-related database tablesQuery your Joomla database for tables with 'avatar' in the name, typically #__discuss_users or #__discuss_profile. Examine the schema for fields that store avatar text or display namesAffected if Avatar text fields exist in the database and are not properly sanitized
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Inspect stored avatar text valuesRun a SELECT query on avatar-related columns (such as avatar, avatarText, or customAvatar fields) in the discuss user tables. Look for HTML tags, script tags, or javascript: URIs in the stored valuesAffected if Any records contain unescaped HTML, <script> tags, or event handlers like onload/onerror in avatar text fields
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Verify output encoding on profile pagesView a user profile page that displays avatar text in a browser. View the page source and check if avatar text appears as raw HTML or is properly escaped (e.g., <script> instead of <script>)Affected if Avatar text renders as executable HTML or JavaScript rather than being entity-encoded
Your environment is affected if Easydiscuss version is 1.0.0 through 5.0.15 and the avatar text feature is enabled with unsanitized user-supplied data present in the database.
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 proper input validation and output encoding for avatar text fields; sanitize all user-supplied data before storage and before rendering in HTML context.
Fix this in Easydiscuss
Scoped from the published advisory
- Consultation2.0 h
- Implementation2.0 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 $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-21624 — 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-2026-21624 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