Firefox OsOperating system · Mozilla
CVE-2015-8510
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 · uneditedCross-site scripting (XSS) vulnerability in the internationalization feature in the default homescreen app in Mozilla Firefox OS before 2.5 allows user-assisted remote attackers to inject arbitrary web script or HTML via a crafted web site that is mishandled during "Add to home screen" bookmarking.
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 confidenceXSS vulnerability in the internationalization feature of the default homescreen app in Mozilla Firefox OS prior to version 2.5 allows remote attackers to inject arbitrary web script or HTML through a malicious website that gets executed when a user adds the site to their home screen via the 'Add to home screen' bookmarking feature.
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
Firefox OsOperating system
<= 2.2CVSS 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
- None
CVSS:3.0/AV:N/AC:L/PR:N/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.
-
Confirm Firefox OS is installedCheck system information or settings to verify the device is running Mozilla Firefox OS. This is typically visible in About or Settings > Phone Information.Affected if System is running Mozilla Firefox OS and the version is <= 2.2
-
Check Firefox OS versionNavigate to Settings > Phone Information or About on the Firefox OS device to view the OS version number.Affected if Version displayed is 2.2 or lower (the affected range is <= 2.2)
-
Identify if default homescreen app is in useVerify the default homescreen app (also called the Homescreen app or Launcher) is active. This is typically the default in Firefox OS and cannot be easily changed.Affected if The default Firefox OS homescreen app is active (this is the vulnerable component)
-
Review Add to home screen bookmarksAccess the home screen and review any bookmarks or shortcuts added via the 'Add to home screen' feature. Check each bookmark's name and associated URL for suspicious content or unexpected scripts.Affected if Any bookmarks added via 'Add to home screen' exist on the device
User is affected if the device runs Mozilla Firefox OS version 2.2 or lower and has bookmarks added via the 'Add to home screen' feature that could contain malicious internationalization strings.
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 to Firefox OS 2.5 or later to obtain the security patch; for systems that cannot be upgraded, consider disabling the 'Add to home screen' feature or implementing network-level filtering of suspicious bookmarks.
Fix this in Firefox Os
Scoped from the published advisory
- Consultation3.0 h
- Implementation8.0 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 $4,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-8510 — 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-2015-8510 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