VulWall Knowledge Base

Practical Security Guides For Your Team

Clear, non-alarmist guidance for real web vulnerabilities so your team can prioritize fixes confidently.

8 articles on this page 217 security topics

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Email Domain Not Protected Against Impersonation

medium

Your domain has a DMARC record, but it's set to 'monitor only' — meaning it watches for suspicious email activity but takes no action to stop it. Anyone can currently send emails that appear to come from your domain, and those emails will land in recipients' inboxes unchallenged. Think of it like having a security camera but no lock on the door.

Exploitable Effort: small
dmarc email-spoofing dns phishing +3
4 min read Apr 1, 2026

Your Website Shares Private Data With Any Other Website That Asks

high

Your server is configured to trust any website that contacts it, including malicious ones. This means if one of your logged-in users visits a harmful website, that site can silently pull data from your application — such as account details, API keys, or personal information — without the user knowing. Think of it like a bank teller who hands over account information to anyone who calls, as long as they say the right words.

Exploitable Effort: small
cors http-headers origin-reflection data-exfiltration +3
4 min read Mar 29, 2026

Cross-Site Data Access Blocked — But Your Server Is Misconfigured

medium

Your server is sending two contradictory security instructions at the same time — one that says 'anyone on the internet can read our responses' and another that says 'include the user's private login credentials.' Browsers are smart enough to refuse this combination, so no one is being harmed right now. But this configuration signals a deeper misunderstanding of how cross-site access controls work, and a developer trying to 'fix' it the wrong way could accidentally create a real vulnerability.

Not Directly Exploitable Effort: small
cors misconfiguration headers credentials +2
4 min read Feb 18, 2026

Your Server Shares Data With Any Website on the Internet

medium

Your application is configured to allow any website in the world to read responses from your server. Think of it like leaving your office filing cabinet unlocked — anyone who walks past can look inside. For pages that are genuinely public (like a marketing site), this is fine. For pages that return user data, account info, or internal details, it's a gap worth closing.

Exploitable Effort: small
cors http-headers misconfiguration api +2
4 min read Feb 18, 2026

Webpages Can Be Embedded by Other Sites (Clickjacking Risk)

medium

Your website is missing a security setting that tells browsers whether your pages are allowed to be embedded inside other websites. Without it, a malicious site could invisibly overlay your pages to trick your visitors into clicking buttons or links they didn't intend to — a technique called clickjacking. This is a missing protection layer, not an active attack in progress.

Not Directly Exploitable Effort: trivial
clickjacking http-headers x-frame-options csp +3
4 min read Feb 18, 2026

Missing Browser Security Policy Leaves Site Without a Content Filter

medium

Your website is missing a security instruction called a Content Security Policy (CSP). Think of it like a guest list for your website — it tells visitors' browsers which scripts and resources are allowed to run, and blocks everything else. Without it, your site is missing one layer of protection that could help limit the damage if another vulnerability were ever found.

Not Directly Exploitable Effort: medium
csp security-headers xss defence-in-depth +2
4 min read Feb 18, 2026

Missing Email Protection Lets Anyone Impersonate Your Domain

medium

Your domain account.roamler.com is missing a security record that tells email providers how to handle messages that pretend to be from you. Without it, someone could send emails that appear to come from your domain — like a fake invoice or login request — and many recipients' inboxes would accept them as legitimate. This is a configuration gap, not an active attack, but it's worth closing.

Exploitable Effort: small
dmarc email-security spoofing dns +3
4 min read Feb 18, 2026

Your Domain Has No Email Sender Verification — Anyone Can Impersonate You

medium

Your domain is missing a basic email safety record called SPF. Without it, there is no mechanism in place to tell other email services which servers are allowed to send email on your behalf. Think of it like a building without a guest list — anyone can show up claiming to be from your company.

Exploitable Effort: trivial
spf email dns spoofing +3
5 min read Feb 18, 2026