Is Netflix Subtitles & Dictionary safe?

Medium risk

Netflix Subtitles & Dictionary is medium risk. Uninstalling Netflix Subtitles & Dictionary makes Chrome open an appforlanguage.com uninstall URL carrying stored extension data: the stored email, last Netflix viewing URL, last visited site marker, and stored subtitle language selections.

App For Languagev4.26.07.15Chrome Web Store
45Risk
Who publishes it

App For Language - 4 other listings from the same operator, 2 of them carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
App For Language

Same store account

4 other listings published from this account, 111k+ users between them. 2 of them carry a finding.

Shared hosts - 12 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

auth.appforlanguage.com
Also called by 2 other listings
d1.appforlanguage.com
Also called by 2 other listings, including Language Reactor transformed: fueled by AI
affiliate.funfluen.com
Also called by 3 other listings
extension.appforlanguage.com
Also called by 3 other listings
m.appforlanguage.com
Also called by 3 other listings, including Language Reactor transformed: fueled by AI
roadmap.funfluen.com
Also called by 3 other listings, including Language Reactor transformed: fueled by AI
test2.appforlanguage.com
Also called by 3 other listings, including Language Reactor transformed: fueled by AI
d.appforlanguage.com
Also called by 4 other listings
flashcard.funfluen.com
Also called by 4 other listings
t4.appforlanguage.com
Also called by 4 other listings
words.appforlanguage.com
Also called by 4 other listings
appforlanguage.com
Also called by 5 other listings

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Findings

Uninstall URL sends Netflix viewing context to appforlanguage.com

Uninstalling Netflix Subtitles & Dictionary makes Chrome open an appforlanguage.com uninstall URL carrying stored extension data: the stored email, last Netflix viewing URL, last visited site marker, and stored subtitle language selections.

Severity
Medium unwanted
Type
Unexpected
CWE
CWE-359
Source
Dynamic sandbox
What actually happens
You did this

The user uninstalls the extension.

The extension did this

The extension causes Chrome to open an appforlanguage.com uninstall URL containing stored email and Netflix viewing context as query parameters.

Captured request
GETappforlanguage.com/why-you-leave-us
Fields in the request URL
  • Your Netflix page URL
    https://www.netflix.com/watch/81234567 (illustrative)

    Identifies the Netflix page that was stored as the last watched movie link.

  • Your browsing history context
    netflix (illustrative)

    Shows that the stored last visited website value was Netflix.

  • Stored extension data
    email=user@example.com, upperLang=en, lowerLang=es (illustrative)

    Includes stored email and subtitle language values read from extension storage before the uninstall URL is set.

Observation

Dynamic analysis confirmed that the uninstall URL is built from stored email, last visited website, last watched Netflix URL, and subtitle language values before Chrome opens it during uninstall.

Updated 30 September 2026mkebkjahadmflkecndjlokjodhmleiia