TeleficationWordPress extension
CVE-2021-39339
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 · uneditedThe Telefication WordPress plugin is vulnerable to Open Proxy and Server-Side Request Forgery via the ~/bypass.php file due to a user-supplied URL request value that gets called by a curl requests. This affects versions up to, and including, 1.8.0.
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 confidenceThe Telefication WordPress plugin versions up to 1.8.0 contain an SSRF vulnerability in the bypass.php file. The plugin accepts a user-supplied URL parameter and passes it directly to a curl request without proper validation or sanitization, allowing attackers to make the server fetch arbitrary URLs.
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
TeleficationWordPress extension
<= 1.8.0CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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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Locate Telefication plugin installationCheck the WordPress wp-content/plugins directory for a folder named 'telefication' or query the wp_posts table for plugin entries.Affected if The telefication folder exists in the plugins directory or plugin records exist in the WordPress database.
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Determine installed plugin versionRead the main plugin file header (e.g., telefication.php) to find the Version field, or query the wp_options table for the active_plugins option to identify the plugin version.Affected if The reported version is 1.8.0 or lower.
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Verify bypass.php file existsCheck for the presence of bypass.php within the telefication plugin directory (wp-content/plugins/telefication/bypass.php).Affected if The bypass.php file exists in the plugin directory.
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Inspect bypass.php for vulnerable curl usageOpen bypass.php and search for code that directly uses a URL parameter in a curl execution without validation functions such as filter_var, wp_http_validate_url, or an allowlist check.Affected if The file contains a curl_exec or wp_remote_get call that uses a raw $_GET or $_POST parameter without sanitization.
The environment is affected if the Telefication plugin version is 1.8.0 or lower and the vulnerable bypass.php file contains unsanitized URL parameter handling in curl requests.
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 Telefication plugin to a version beyond 1.8.0 if available, or remove the plugin entirely. If the bypass.php file must remain, implement strict allowlist validation on the URL parameter before passing to curl.
Fix this in Telefication
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 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 $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-39339 — 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-2021-39339 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