Everest NewsWordPress extension · Everestthemes
CVE-2023-27421
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 · uneditedUnauth. Reflected Cross-Site Scripting (XSS) vulnerability in Everest themes Everest News theme <= 1.1.0 versions.
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 · high confidenceAn unauthenticated reflected Cross-Site Scripting (XSS) vulnerability exists in the Everest News WordPress theme versions 1.1.0 and below. Attackers can inject malicious JavaScript code through unsanitized user input that gets reflected back in the application's response without proper output encoding.
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
Everest NewsWordPress extension
<= 1.1.0CVSS 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 if Everest News theme is installedLocate the Everest News theme files in your WordPress installation's theme directoryAffected if The theme directory exists in your WordPress themes folder
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Determine the installed versionOpen the theme's style.css file and locate the 'Version:' declaration in the file header commentAffected if The version number is 1.1.0 or lower
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Compare against affected version rangeCompare the discovered version number to the affected range (<=1.1.0)Affected if The version is 1.1.0 or below, or if the version declaration is missing and the theme is known to be from an unpatched release
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Verify if the theme is activeCheck the WordPress admin under Appearance > Themes to confirm whether Everest News is the currently active themeAffected if The theme is activated and serving pages to visitors, making the reflected XSS payload executable in user contexts
You are affected if the Everest News theme version 1.1.0 or lower is installed and actively being used on your WordPress site, as the reflected XSS vulnerability exists in the theme code itself when handling unsanitized user input.
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 dataUpdate the Everest News theme to the latest version (greater than 1.1.0). If no patched version is available, implement WAF rules or input filtering to block XSS attack vectors until a fix is released.
Fix this in Everest News
Scoped from the published advisory
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-27421 — 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-2023-27421 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data