CVE-2026-58077
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 · uneditedJoomla Extension - weeblr.com - Unauthenticated stored XSS in 4Analytics < 5.0.2 - The Joomla extension 4Analytics is vulnerable to an unauthenticated stored XSS. A specially crafted unauthenticated request may result in website takeover under some circumstances.
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 confidenceThe Joomla extension 4Analytics from weeblr.com versions prior to 5.0.2 is vulnerable to an unauthenticated stored XSS. Attackers can inject malicious scripts via specially crafted HTTP requests without authentication, and since the payload is stored, it executes each time the affected page loads, potentially leading to full website compromise.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- Low
- Privileges
- None
- Authentication
- X
- User interaction
- P
- Scope
- X
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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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Confirm 4Analytics extension is installedLog into the Joomla Administrator panel, navigate to System > Manage > Extensions. Search for '4Analytics' in the extensions list to confirm it is installed.Affected if The 4Analytics extension appears in the installed extensions list.
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Identify the installed version of 4AnalyticsIn the Extensions manager (System > Manage > Extensions), locate the 4Analytics entry and note the version number displayed in the Version column. Alternatively, check the extension's manifest file in /administrator/manifests/packages/ or /plugins/ for a file named similarly to 4analytics.xml and read the <version> tag.Affected if The version number shown is lower than 5.0.2 (for example, 5.0.1, 5.0.0, 4.x.x, or any earlier version).
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Verify the extension is enabledIn the Joomla Extensions manager, check the Status column for the 4Analytics entry. A status of 'Enabled' or '1' indicates the extension is active.Affected if The extension status shows as Enabled, meaning the extension processes incoming requests and stores data in the database.
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Check for stored XSS payloads in extension-related database tablesAccess the Joomla database (via phpMyAdmin or command line) and examine tables that may store 4Analytics data. Look for unusual script tags, javascript: URIs, or HTML event attributes (such as onload, onerror) in text fields. Common tables might be prefixed with #__4analytics or similar, or check generic tables like #__content for injected scripts that coincide with 4Analytics usage.Affected if Database records contain raw <script> tags, javascript: references, or event handlers like onerror= in fields associated with 4Analytics input.
If the 4Analytics extension is installed, enabled, and its version is lower than 5.0.2, the environment is vulnerable to CVE-2026-58077.
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 dataUpdate 4Analytics to version 5.0.2 or later to remediate the vulnerability. Additionally, audit the application for existing injected malicious content since stored XSS persists until cleaned.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-58077 — 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-2026-58077 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