CVE-2023-21434
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 input validation vulnerability in Galaxy Store prior to version 4.5.49.8 allows local attackers to execute JavaScript by launching a web page.
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 confidenceThis is a Cross-Site Scripting (XSS) vulnerability in Samsung's Galaxy Store Android application. The app fails to properly validate input when launching web pages, allowing a local attacker to inject and execute arbitrary JavaScript code in the context of the application's WebView. This enables client-side attacks such as session hijacking, theft of stored credentials, or phishing via injected malicious scripts.
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< 4.5.49.8CVSS 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:3.1/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.
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Locate the Galaxy Store app version on the deviceOpen Settings > Apps > Galaxy Store on a Samsung Android device, or use ADB command 'adb shell dumpsys package com.sec.android.app.samsungapps | grep versionName'Affected if Unable to locate the app or version information is unavailable
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Extract the installed version numberRead the version displayed in the app info screen (format is typically X.Y.Z.XX) or parse the versionName from the ADB package dump outputAffected if Version number cannot be determined from the device
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Compare against the vulnerable version rangeCompare your installed version to the affected range: any version below 4.5.49.8 is vulnerable. For example, 4.5.49.7, 4.5.48.5, 4.4.00.1 are all affectedAffected if Installed version is less than 4.5.49.8 (for example, 4.5.49.7 or earlier)
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Verify the app's WebView component is accessibleAttempt to open any link or web content within Galaxy Store (such as app details page with developer info link) to confirm the WebView feature is functionalAffected if The app is installed but the WebView cannot be tested (app may be disabled or restricted)
A user is affected if the installed Galaxy Store version is lower than 4.5.49.8 and the app's WebView functionality is accessible on the device.
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.
dbcve · scoped4.5.49.8
Update Galaxy Store to version 4.5.49.8 or later, which contains the fix for proper input validation. Organizations should enforce automatic app updates or deploy the patched version via MDM/EMM solutions.
Galaxy Store version 4.5.49.8 or later
- Open the Galaxy Store app on your Samsung device
- Navigate to the Settings or Menu section
- Look for 'Apps' or 'My Apps'
- Find and select Galaxy Store
- Tap on 'Update' or check for updates
- Ensure the update installs version 4.5.49.8 or later
- Verify the installed version in the app settings after updating
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-21434 — 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-2023-21434 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