๐Ÿ” CVE Alert

CVE-2026-18855

CRITICAL 9.1

Link Library <= 7.9.4 - Unauthenticated Arbitrary File Deletion via link_url Parameter

CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th

The Link Library plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the ll_delete_link_fields function in all versions up to, and including, 7.9.4 This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Exploitation requires the administrator to have enabled the 'Delete local file on link deletion' plugin option (disabled by default) and to subsequently permanently delete the attacker-submitted link, which is a routine moderation action.

CWE CWE-22
Vendor jackdewey
Product link library
Published Aug 15, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

jackdewey / Link Library
0 โ‰ค 7.9.4

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/41327dfa-db64-476a-a263-7bd4f69fb857?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library-admin.php#L7874 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library-admin.php#L7865 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/usersubmission.php#L52 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/usersubmission.php#L476 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library.php#L2288 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?reponame=&new=3646361%40link-library%2Ftags%2F7.9.5&old=3626573%40link-library%2Ftags%2F7.9.4 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3646360/link-library/trunk/link-library-admin.php plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?old_path=%2Flink-library/tags/7.9.4&new_path=%2Flink-library/tags/7.9.5

Credits

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