CVE-2026-78397
Deferred Deferred - Pending Action

Server-Side Request Forgery in Link Library WordPress Plugin

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: WPScan

Description
The Link Library WordPress plugin before 7.9.6 does not validate the destination of a user-supplied URL before falling back to an unprotected fetch when its safe request is rejected, allowing unauthenticated visitors to make the site issue requests to hosts on its internal network and to learn from the response whether an internal service answered. Versions below 7.8.8 are covered by CVE-2025-68600; this entry covers 7.8.8 through 7.9.5, where that fix was incomplete. Exploitation requires the site owner to have published the Link Library WordPress plugin before 7.9.6's public link submission form with reciprocal-link validation enabled.

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Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-10-15
AI Q&A
2026-09-25
EPSS Evaluated
2026-10-14
NVD
CVE-2026-78397
EUVD
EUVD-2026-86529

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
link_library link_library From 7.8.8 (inc) to 7.9.6 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

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Executive Summary

This is an unauthenticated Server-Side Request Forgery (SSRF) vulnerability in the Link Library WordPress plugin versions 7.8.8 through 7.9.5. The plugin fails to validate user-supplied URLs during reciprocal link validation, allowing attackers to trick the site into making requests to internal network hosts. The plugin attempts a safe request first but falls back to an unprotected fetch if that fails, exposing internal services.

Detection Guidance

Check if the Link Library WordPress plugin version is between 7.8.8 and 7.9.5. Use WordPress admin panel or run a command like 'wp plugin list' if using WP-CLI to verify the installed version.

Impact Analysis

An attacker could exploit this to access internal services on your network, potentially stealing sensitive data or performing unauthorized actions. The vulnerability requires the site owner to have enabled the public link submission form with reciprocal-link validation for exploitation.

Compliance Impact

This vulnerability could lead to unauthorized access to internal systems, potentially exposing personal or sensitive data. This may violate compliance requirements under GDPR or HIPAA if such data is compromised, leading to legal and regulatory penalties.

Mitigation Strategies

Update the Link Library plugin to version 7.9.6 or later immediately. Disable the public link submission form with reciprocal-link validation if not needed.

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