CVE-2026-18855
Link Library <= 7.9.4 - Unauthenticated Arbitrary File Deletion via link_url Parameter
- Published
- Updated
- Reserved
- Assigned by
- Wordfence
Description
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.
Timeline
ID reserved
By Wordfence
- 11 days later
· 11 days later
Published
- 2 days later
· 2 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.4% · top 28% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Weakness
Affected products
- affected ≤ 7.9.4
References (9)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/41327dfa-db64-476a-a263-7bd4f69fb857?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library-admin.php#L7874 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library-admin.php#L7865 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/usersubmission.php#L52 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/usersubmission.php#L476 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/link-library/tags/7.9.4/link-library.php#L2288 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3646361%40link-library%2Ftags%2F7.9.5&old=3626573%40link-library%2Ftags%2F7.9.4 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset/3646360/link-library/trunk/link-library-admin.php (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?old_path=%2Flink-library/tags/7.9.4&new_path=%2Flink-library/tags/7.9.5 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-18855)Record last updated .