CVE-2025-25818
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 · uneditedA cross-site scripting (XSS) vulnerability in Emlog Pro v2.5.4 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the postStrVar function at article_save.php.
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 confidenceA stored cross-site scripting (XSS) vulnerability exists in Emlog Pro v2.5.4 where the postStrVar function in article_save.php fails to properly sanitize user input, allowing attackers to inject malicious JavaScript or HTML that executes when other users view the affected content.
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= 2.5.4CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/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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Confirm Emlog Pro versionAccess the admin dashboard and navigate to the About or System Information page to view the installed version, or check the version.php file in the include or root directory for the version numberAffected if The installed version is exactly 2.5.4
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Locate article_save.phpNavigate to the admin directory (commonly /admin/) and locate the article_save.php file in the directory structureAffected if The file article_save.php exists in the Emlog installation
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Inspect postStrVar functionOpen article_save.php and locate the postStrVar function definition. Examine whether it uses htmlspecialchars, htmlentities, or other sanitization functions on user-supplied input before processingAffected if The postStrVar function does not perform output encoding on user input using functions like htmlspecialchars with proper charset
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Check for stored XSS in contentReview recent articles or content entries in the database or through the admin panel for suspicious script tags, event handlers (onerror, onload, onclick), or iframe elements in title or content fieldsAffected if Malicious JavaScript or HTML code is found stored in article titles or content fields
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Verify admin access logsCheck server access logs or Emlog admin logs for any unauthorized article_save.php submissions containing unusual characters or patterns typical of XSS payloadsAffected if Multiple requests to article_save.php contain XSS payload patterns in POST parameters
A user is affected if they are running Emlog Pro version 2.5.4 with the vulnerable postStrVar function in article_save.php lacking proper output encoding, and potentially with existing malicious scripts stored in the database.
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 dataImplement proper input validation and output encoding in the postStrVar function, using context-aware escaping (e.g., htmlspecialchars with appropriate charset) before rendering user-supplied content in article_save.php.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-25818 — 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-2025-25818 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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