CVE-2026-25341
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 · uneditedImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in RSJoomla! RSFirewall! rsfirewall allows Stored XSS.This issue affects RSFirewall!: from n/a through <= 1.1.45.
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 confidenceRSFirewall! component for Joomla! contains a Stored Cross-site Scripting (XSS) vulnerability where malicious JavaScript or HTML code can be injected and persistently stored, then executed when other users view the affected page. The vulnerability stems from improper input sanitization during web page generation, allowing attackers to bypass output encoding protections.
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
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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 RSFirewall! is installedAccess Joomla! administrator panel, navigate to Components > RSFirewall! or check the /administrator/components/com_rsfirewall/ directory exists on the server filesystemAffected if RSFirewall! component is present in the Joomla! installation
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Identify installed RSFirewall! versionIn Joomla! admin, go to Components > RSFirewall! > Dashboard or System Information, or inspect the manifest.xml file in /administrator/components/com_rsfirewall/Affected if Version cannot be determined or version is older than the patched release
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Compare version to affected rangesCross-reference your installed version number against publicly disclosed affected version ranges for CVE-2026-25341Affected if Installed version falls within the vulnerable version range
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Verify component is enabled and accessibleCheck Joomla! extensions table or admin panel to confirm RSFirewall! is published and not disabledAffected if Component is enabled and accessible to users
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Inspect user-accessible input pointsReview RSFirewall! component pages accessible to users (front-end) for input fields that accept and display user-supplied data without proper encodingAffected if Component accepts and renders user input without output encoding
A user is affected if RSFirewall! for Joomla! is installed, running a version within the vulnerable range, and the component is enabled with accessible input fields that do not properly encode output.
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 dataUpgrade RSFirewall! to the latest version which includes proper input validation and output encoding. If no update is available, implement context-aware output encoding at all points where user-supplied data is rendered in the application's pages.
- Consultation2.0 h
- Implementation4.0 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 $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-25341 — 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-2026-25341 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
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