CVE-2020-7051
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 · uneditedCodologic Codoforum through 4.8.4 allows stored XSS in the login area. This is relevant in conjunction with CVE-2020-5842 because session cookies lack the HttpOnly flag. The impact is account takeover.
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 · moderate confidenceCodologic Codoforum through 4.8.4 contains a stored XSS vulnerability in the login area. When combined with CVE-2020-5842 (missing HttpOnly flag on session cookies), attackers can execute malicious JavaScript to steal session cookies and perform account takeover.
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<= 4.8.4CVSS 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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Identify Codoforum installation and versionCheck the admin dashboard or site footer for the version number, or inspect the system configuration files for version metadataAffected if The installed version is 4.8.4 or any version lower than 4.8.4
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Verify the login page is accessibleNavigate to the login area of the forum and confirm it loads without authenticationAffected if The login page is publicly accessible and accepts user input
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Check if user input in login fields is reflected without sanitizationSubmit a test string containing HTML/script characters (such as <script>alert(1)</script>) in the username or other login input fields and observe whether the raw input is reflected in the page responseAffected if The submitted script tags or HTML are rendered as-is in the response without encoding or sanitization
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Inspect session cookie configurationLog in to the forum, open browser developer tools, locate the session cookie, and verify whether the HttpOnly attribute is present in the Set-Cookie headerAffected if The session cookie lacks the HttpOnly flag, allowing JavaScript access to the cookie value
A user is affected if Codoforum version is 4.8.4 or lower AND the login page reflects unsanitized input AND session cookies are missing the HttpOnly flag, enabling the stored XSS and session hijacking attack chain.
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.
From vendor dataFix the stored XSS vulnerability in the login area by properly sanitizing user input, and set the HttpOnly flag on session cookies to prevent JavaScript access.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-7051 — 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-2020-7051 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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- 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
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