Vulnerability Scan Result

Target:

http://contentstack.com/ (redirect)

Scanned target: https://www.contentstack.com/

Submitted: Oct 15, 2025 from QA

Public Scan

Scan mode: Passive (non-intrusive)

Summary

medium

Info

Low

Medium

High

Critical

Screenshot

Screenshot could not be taken.

Title:	Reimagine possible \| Contentstack
Description:	The world’s first adaptive digital experience platform — AI-driven content plus real-time customer data for personalized experiences like never before. Contentstack Edge turns customer insights into truly personalized experiences across all of your brand’s digital channels at the exact moment customers need them.

IP Information

ip_address	104.17.186.25
country	-
network_name	Cloudflare Inc
asn	AS13335

ip_address	104.17.187.25
country	-
network_name	Cloudflare Inc
asn	AS13335

Open Ports

80/tcp	http	Cloudflare http proxy -
443/tcp	https	Cloudflare http proxy -
2082/tcp	http	Cloudflare http proxy -
2083/tcp	https	nginx -
2086/tcp	http	Cloudflare http proxy -
2087/tcp	https	nginx -
8080/tcp	http	Cloudflare http proxy -
8443/tcp	https	Cloudflare http proxy -

Web Technologies

Software / Version	Category
Linkedin Insight Tag	Analytics
Google Analytics	Analytics
Google Font API	Font scripts
Open Graph	Miscellaneous
Priority Hints	Performance
Cloudflare	CDN
Cloudflare Bot Management	Security
Contentstack	CMS
Google Tag Manager	Tag managers
jsDelivr	CDN
OneTrust	Cookie compliance
HSTS	Security

Web Application Vulnerabilities

Evidence

URL	Cookie Name	Evidence
https://www.contentstack.com/	cs-personalize-user-uid, cs-personalize-manifest	The server responded with Set-Cookie header(s) that does not specify the HttpOnly flag: Set-Cookie: cs-personalize-user-uid=fb175edc-a757-5772-9629-eb1b279cd727 Set-Cookie: cs-personalize-manifest={"activeVariants":{"0":null,"1":null,"2":null,"4":null},"experiences":[{"shortUid":"0","activeVariantShortUid":null},{"shortUid":"1","activeVariantShortUid":null},{"shortUid":"2","activeVariantShortUid":null},{"shortUid":"4","activeVariantShortUid":null}]}

Vulnerability description

We found that a cookie has been set without the HttpOnly flag, which means it can be accessed by potentially malicious JavaScript code running inside the web page. The root cause for this usually revolves around misconfigurations in the code or server settings.

Risk description

The risk is that an attacker who injects malicious JavaScript code on the page (e.g. by using an XSS attack) can access the cookie and can send it to another site. In case of a session cookie, this could lead to session hijacking.

Recommendation

Ensure that the HttpOnly flag is set for all cookies.

Classification

CWE	CWE-1004
OWASP Top 10 - 2017
OWASP Top 10 - 2021

Evidence

URL	Cookie Name	Evidence
https://www.contentstack.com/	cs-personalize-user-uid, cs-personalize-manifest	Set-Cookie: cs-personalize-user-uid=fb175edc-a757-5772-9629-eb1b279cd727 Set-Cookie: cs-personalize-manifest={"activeVariants":{"0":null,"1":null,"2":null,"4":null},"experiences":[{"shortUid":"0","activeVariantShortUid":null},{"shortUid":"1","activeVariantShortUid":null},{"shortUid":"2","activeVariantShortUid":null},{"shortUid":"4","activeVariantShortUid":null}]}

Vulnerability description

We found that a cookie has been set without the Secure flag, which means the browser will send it over an unencrypted channel (plain HTTP) if such a request is made. The root cause for this usually revolves around misconfigurations in the code or server settings.

Risk description

The risk exists that an attacker will intercept the clear-text communication between the browser and the server and he will steal the cookie of the user. If this is a session cookie, the attacker could gain unauthorized access to the victim's web session.

Recommendation

Whenever a cookie contains sensitive information or is a session token, then it should always be passed using an encrypted channel. Ensure that the secure flag is set for cookies containing such sensitive information.

Classification

CWE	CWE-614
OWASP Top 10 - 2017
OWASP Top 10 - 2021

Evidence

URL	Method	Parameters	Evidence
https://www.contentstack.com/_next/static/media/	GET	Headers: User-Agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36 Cookies: __cf_bm=_bgsmGY8k1FLegbYIGijPSummEe8gQcNro14XKMpAas-1760570883.7365205-1.0.1.1-vUUL8CHxmClpRzykmL_9sVGsfjG2DmTD_65l7TlIzoLnIAdD1z4u8jJNiqJNj2D...	`1 : <link rel="dns-prefetch" href="http://munchkin.marketo.net"> 2 : <link rel="dns-prefetch" href="http://cdn.bizible.com">`

Vulnerability description

We noticed that the target application is serving mixed content. This occurs when initial HTML is loaded over a secure HTTPS connection, but other resources (such as images, videos, stylesheets, scripts) are loaded over an insecure HTTP connection. This is called mixed content because both HTTP and HTTPS content are being loaded to display the same page, and the initial request was secure over HTTPS.

Risk description

The risk is that the insecurely loaded resources (HTTP) on an otherwise secure page (HTTPS) can be intercepted or manipulated by attackers, potentially leading to eavesdropping or content tampering.

Recommendation

Ensure that all external resources the page references are loaded using HTTPS.

Classification

CWE	CWE-311
OWASP Top 10 - 2017
OWASP Top 10 - 2021

Evidence

URL	Evidence
https://www.contentstack.com/_next/static/media/	Response headers do not include the Referrer-Policy HTTP security header as well as the `<meta/>` tag with name 'referrer' is not present in the response.

Vulnerability description

We noticed that the target application's server responses lack the Referrer-Policy HTTP header, which controls how much referrer information the browser will send with each request originated from the current web application.

Risk description

The risk is that if a user visits a web page (e.g. "http://example.com/pricing/") and clicks on a link from that page going to e.g. "https://www.google.com", the browser will send to Google the full originating URL in the `Referer` header, assuming the Referrer-Policy header is not set. The originating URL could be considered sensitive information and it could be used for user tracking.

Recommendation

The Referrer-Policy header should be configured on the server side to avoid user tracking and inadvertent information leakage. The value `no-referrer` of this header instructs the browser to omit the Referer header entirely.

Classification

CWE	CWE-693
OWASP Top 10 - 2017
OWASP Top 10 - 2021

Evidence

URL Evidence

URL	Evidence
https://www.contentstack.com/	Response headers include the HTTP Content-Security-Policy security header with the following security issues:script-src: script-src directive is missing. frame-ancestors: Allow only resources downloaded over HTTPS. default-src: The default-src directive should be set as a fall-back when other restrictions have not been specified. object-src: Missing object-src allows the injection of plugins which can execute JavaScript. We recommend setting it to 'none'. base-uri: Missing base-uri allows the injection of base tags. They can be used to set the base URL for all relative (script) URLs to an attacker controlled domain. We recommend setting it to 'none' or 'self'. frame-ancestors: This directive tells the browser whether you want to allow your site to be framed or not. By preventing a browser from framing your site you can defend against attacks like clickjacking. The recommended value is 'none' or 'self'.

https://www.contentstack.com/

Response headers include the HTTP Content-Security-Policy security header with the following security issues:script-src: script-src directive is missing. frame-ancestors: Allow only resources downloaded over HTTPS. default-src: The default-src directive should be set as a fall-back when other restrictions have not been specified. object-src: Missing object-src allows the injection of plugins which can execute JavaScript. We recommend setting it to 'none'. base-uri: Missing base-uri allows the injection of base tags. They can be used to set the base URL for all relative (script) URLs to an attacker controlled domain. We recommend setting it to 'none' or 'self'. frame-ancestors: This directive tells the browser whether you want to allow your site to be framed or not. By preventing a browser from framing your site you can defend against attacks like clickjacking. The recommended value is 'none' or 'self'.

Vulnerability description

We noticed that the Content-Security-Policy (CSP) header configured for the web application includes unsafe directives. The CSP header activates a protection mechanism implemented in web browsers which prevents exploitation of Cross-Site Scripting vulnerabilities (XSS) by restricting the sources from which content can be loaded or executed.

Risk description

For example, if the unsafe-inline directive is present in the CSP header, the execution of inline scripts and event handlers is allowed. This can be exploited by an attacker to execute arbitrary JavaScript code in the context of the vulnerable application.

Recommendation

Remove the unsafe values from the directives, adopt nonces or hashes for safer inclusion of inline scripts if they are needed, and explicitly define the sources from which scripts, styles, images or other resources can be loaded.

Classification

CWE	CWE-693
OWASP Top 10 - 2017
OWASP Top 10 - 2021

Evidence

URL	Evidence
https://www.contentstack.com/_next/static/media/	Response headers do not include the X-Content-Type-Options HTTP security header

Vulnerability description

We noticed that the target application's server responses lack the X-Content-Type-Options header. This header is particularly important for preventing Internet Explorer from reinterpreting the content of a web page (MIME-sniffing) and thus overriding the value of the Content-Type header.

Risk description

The risk is that lack of this header could make possible attacks such as Cross-Site Scripting or phishing in Internet Explorer browsers.

Recommendation

We recommend setting the X-Content-Type-Options header such as `X-Content-Type-Options: nosniff`.

Classification

CWE	CWE-693
OWASP Top 10 - 2017
OWASP Top 10 - 2021

Evidence

URL
https://www.contentstack.com/robots.txt

Vulnerability description

We found the robots.txt on the target server. This file instructs web crawlers what URLs and endpoints of the web application they can visit and crawl. Website administrators often misuse this file while attempting to hide some web pages from the users.

Risk description

There is no particular security risk in having a robots.txt file. However, it's important to note that adding endpoints in it should not be considered a security measure, as this file can be directly accessed and read by anyone.

Recommendation

We recommend you to manually review the entries from robots.txt and remove the ones which lead to sensitive locations in the website (ex. administration panels, configuration files, etc).

Evidence

URL	Evidence
https://www.contentstack.com/_next/static/media/	Response headers do not include the HTTP Strict-Transport-Security header

Vulnerability description

We noticed that the target application lacks the HTTP Strict-Transport-Security header in its responses. This security header is crucial as it instructs browsers to only establish secure (HTTPS) connections with the web server and reject any HTTP connections.

Risk description

The risk is that lack of this header permits an attacker to force a victim user to initiate a clear-text HTTP connection to the server, thus opening the possibility to eavesdrop on the network traffic and extract sensitive information (e.g. session cookies).

Recommendation

The Strict-Transport-Security HTTP header should be sent with each HTTPS response. The syntax is as follows: `Strict-Transport-Security: max-age=<seconds>[; includeSubDomains]` The parameter `max-age` gives the time frame for requirement of HTTPS in seconds and should be chosen quite high, e.g. several months. A value below 7776000 is considered as too low by this scanner check. The flag `includeSubDomains` defines that the policy applies also for sub domains of the sender of the response.

Classification

CWE	CWE-693
OWASP Top 10 - 2017
OWASP Top 10 - 2021

Evidence

Software / Version	Category
Linkedin Insight Tag	Analytics
Google Analytics	Analytics
Google Font API	Font scripts
Open Graph	Miscellaneous
Priority Hints	Performance
Cloudflare	CDN
Cloudflare Bot Management	Security
Contentstack	CMS
Google Tag Manager	Tag managers
jsDelivr	CDN
OneTrust	Cookie compliance
HSTS	Security

Vulnerability description

We noticed that server software and technology details are exposed, potentially aiding attackers in tailoring specific exploits against identified systems and versions.

Risk description

The risk is that an attacker could use this information to mount specific attacks against the identified software type and version.

Recommendation

We recommend you to eliminate the information which permits the identification of software platform, technology, server and operating system: HTTP server headers, HTML meta information, etc.

Evidence

URL
Missing: https://www.contentstack.com/.well-known/security.txt

Vulnerability description

We have noticed that the server is missing the security.txt file, which is considered a good practice for web security. It provides a standardized way for security researchers and the public to report security vulnerabilities or concerns by outlining the preferred method of contact and reporting procedures.

Risk description

There is no particular risk in not having a security.txt file for your server. However, this file is important because it offers a designated channel for reporting vulnerabilities and security issues.

Recommendation

We recommend you to implement the security.txt file according to the standard, in order to allow researchers or users report any security issues they find, improving the defensive mechanisms of your server.

Infrastructure Vulnerabilities

Evidence

Software / Version	Category
Cloudflare	CDN

Vulnerability description

We noticed that server software and technology details are exposed, potentially aiding attackers in tailoring specific exploits against identified systems and versions.

Risk description

The risk is that an attacker could use this information to mount specific attacks against the identified software type and version.

Recommendation

We recommend you to eliminate the information which permits the identification of software platform, technology, server and operating system: HTTP server headers, HTML meta information, etc.

Evidence

Domain Queried	DNS Record Type	Description	Value
www.contentstack.com	A	IPv4 address	104.17.186.25
www.contentstack.com	A	IPv4 address	104.17.187.25
www.contentstack.com	AAAA	IPv6 address	2606:4700::6811:bb19
www.contentstack.com	AAAA	IPv6 address	2606:4700::6811:ba19
www.contentstack.com	CNAME	Canonical name	contentstack-com-2025.contentstackapps.com

Risk description

An initial step for an attacker aiming to learn about an organization involves conducting searches on its domain names to uncover DNS records associated with the organization. This strategy aims to amass comprehensive insights into the target domain, enabling the attacker to outline the organization's external digital landscape. This gathered intelligence may subsequently serve as a foundation for launching attacks, including those based on social engineering techniques. DNS records pointing to services or servers that are no longer in use can provide an attacker with an easy entry point into the network.

Recommendation

We recommend reviewing all DNS records associated with the domain and identifying and removing unused or obsolete records.

Evidence

Software / Version	Category
Cloudflare Bot Management	Security
Linkedin Insight Tag	Analytics
HSTS	Security
Cloudflare	CDN
Priority Hints	Performance
Open Graph	Miscellaneous

Vulnerability description

We noticed that server software and technology details are exposed, potentially aiding attackers in tailoring specific exploits against identified systems and versions.

Risk description

The risk is that an attacker could use this information to mount specific attacks against the identified software type and version.

Recommendation

We recommend you to eliminate the information which permits the identification of software platform, technology, server and operating system: HTTP server headers, HTML meta information, etc.

Evidence

Software / Version	Category
Cloudflare	CDN

Vulnerability description

We noticed that server software and technology details are exposed, potentially aiding attackers in tailoring specific exploits against identified systems and versions.

Risk description

The risk is that an attacker could use this information to mount specific attacks against the identified software type and version.

Recommendation

We recommend you to eliminate the information which permits the identification of software platform, technology, server and operating system: HTTP server headers, HTML meta information, etc.

Operating System	Accuracy
FreeBSD 11.0-RELEASE	91%

Evidence

Software / Version	Category
Cloudflare	CDN

Vulnerability description

We noticed that server software and technology details are exposed, potentially aiding attackers in tailoring specific exploits against identified systems and versions.

Risk description

The risk is that an attacker could use this information to mount specific attacks against the identified software type and version.

Recommendation

We recommend you to eliminate the information which permits the identification of software platform, technology, server and operating system: HTTP server headers, HTML meta information, etc.