Firefox Add-ons

21Versions

0Code reviewed

Not reviewed

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431 indicators in this extension

431 indicators

0 versions analysed

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What our analysis found

Calendly: Meeting Scheduling Software, used by 7,520 people, is not yet reviewed by Extension Auditor. Its permissions mean it can read and change data on all websites and can inject scripts into pages. It comes from a publisher with 2 extensions and was last updated in July 2026.

Calendly: Meeting Scheduling Software Firefox extension security report

ID: calendly-meeting-scheduling

Extension Info & Metadata

Status

Active

Version

4.13.0.0

Size

4.05 MB

Rating

4.3/5

Reviews

Users

7,520

Type

Extension

Updated

Jul 1, 2026

Publisher Contextual Analysis

Author: Calendly
Privacy: Privacy Policy
Country: US
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Address: 115 E. Main Street Suite A1B Buford, GA 30518 US
Website: Visit

Extensions

Active

Obsolete

Listed

Unlisted

Users

15,097

Screenshots & videos

Install growth

User Growth

Showing data from Sep 13, 2023 to Sep 12, 2024

Versions

-4.21%(-324 users)

Compared to 3 months ago

10 versions released in this period

Rating Count

Total: 35 ratings

Average Rating

Current: 4.17 / 5.0+0.06

See plans

React Flow

Internal permhash`80f91cc3e9…`
7 malicious

90 other extensions carry this fingerprint; 7 of the cluster are known malicious.

Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
+83 more

Permhash (Mandiant)`c64f2a172c…`
No malicious matches

1 other extension carries this fingerprint, none of them known malicious.

Withheldnot flagged

Network indicators

425 URLs and 6 IP literals were extracted from this version.

Item	Type	Severity	Description
scripting	Permission	Critical	This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.
<all_urls>	Host	Critical	Broad host access — the extension can read/modify content on every website.
Contextual Risk Factors	Risk Factor	High	The following context increases the overall risk:• 20% increase: Access to sensitive domains increases potential impact• 10% increase: Early script execution enables pre-emptive content manipulation• 15% increase: Older manifest version lacks modern security controls
Broad Host Permissions	Risk Factor	High	This extension has broad host permissions allowing it to access many or all websites.
Broad Content Script Access	Risk Factor	High	This extension can inject scripts into any website.
activeTab	Permission	Medium	This permission grants temporary access to the current tab. Rated Medium because it can access current page content when invoked, though limited to user-initiated actions.
storage	Permission	Medium	This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
unlimitedStorage	Permission	Medium	This permission removes storage quota restrictions. Rated Medium because it can store large amounts of user data without limits, potentially impacting browser performance and storing extensive tracking data.
Access to Sensitive Domains	Risk Factor	Medium	This extension requests access to sensitive domains: https://clients-assets-staging.calendly.com//auth.html, https://mail.google.com/, https://calendar.google.com/, https://www.linkedin.com/*
Early Content Script Execution	Risk Factor	Medium	This extension runs content scripts at document_start.
Older Manifest Version	Risk Factor	Medium	This extension uses Manifest Version 2

Sensitive Domain Access

This extension has access to the following sensitive domains:

https://clients-assets-staging.calendly.com/*/auth.html*
https://mail.google.com/*
https://calendar.google.com/*
https://www.linkedin.com/*

431 indicators in this extension

431 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

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About this extension

Eliminate the back-and-forth of scheduling. Manage your meetings, scheduling links, and contacts — all in one place, from wherever you’re already working online.

User reviews

4.6 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

use it both at work and at home. consistent performance everywhere

Zachilo·26 Aug 2026

спасибо, очень полезная штука

Vonali·19 Apr 2026

Una de las aplicaciones más efectivas aquí

Carond12457·23 Feb 2026

Extension files

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URLs

425

IPv4

URLs

View the external URLs this extension communicates with to understand its network activity and data interactions.

No URLs found

No IP addresses found

431 indicators in this extension

431 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99 Start 7-day trial — all reports

One-time payment · Secure checkout by Stripe

Version	Size	Verdict	Findings	Permhash
3.1.0.0 Latest	9.31 MB	Not scanned	—	341cbe8b3b425bb650ba93eb2a44e4badae065133e4f719cc507eaceef20f9bc
3.2.0.1	2.03 MB	Not scanned	—	341cbe8b3b425bb650ba93eb2a44e4badae065133e4f719cc507eaceef20f9bc
3.2.1.0	2.03 MB	Not scanned	—	341cbe8b3b425bb650ba93eb2a44e4badae065133e4f719cc507eaceef20f9bc
3.4.0.1	1.92 MB	Not scanned	—	341cbe8b3b425bb650ba93eb2a44e4badae065133e4f719cc507eaceef20f9bc
3.3.0.0	2.03 MB	Not scanned	—	341cbe8b3b425bb650ba93eb2a44e4badae065133e4f719cc507eaceef20f9bc
2.1.0.0	3.64 MB	Not scanned	—	ec8a06a401f562b346a56bd5bef1e49c2df6981bf41a46fffc187e65e22bed4d
3.5.0.2	1.91 MB	Not scanned	—	341cbe8b3b425bb650ba93eb2a44e4badae065133e4f719cc507eaceef20f9bc
4.0.0.1	2.66 MB	Not scanned	—	c64f2a172cd4e7fae753552247a4438909f2f44614044f7256a786e083502e65
4.1.0.0	3.59 MB	Not scanned	—	c64f2a172cd4e7fae753552247a4438909f2f44614044f7256a786e083502e65
4.1.1.0	3.59 MB	Not scanned	—	c64f2a172cd4e7fae753552247a4438909f2f44614044f7256a786e083502e65

Showing 1 to 10 of 30 rows

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Code Diff

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0 changed files detected

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Not reviewed

431 indicators in this extension

What our analysis found