CVE-2026-18855Network attack vector

Unauthenticated file deletion via unchecked link paths

Published Aug 15, 2026 · Updated Aug 15, 2026

Arbitrary file deletion in Yannick Lefebvre Link Library 7.9.4 and earlier allows remote attackers to delete server files via link submissions. ll_delete_link_fields passes a stored link_url value to a file-deletion operation without restricting the resolved path to an intended directory. The disabled-by-default deletion option must be enabled, and an administrator must permanently delete the submitted link; deleting wp-config.php enables code execution.

CVSS severity9.1
Critical
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file deletion in Yannick Lefebvre Link Library 7.9.4 and earlier allows remote attackers to delete server files via link submissions. ll_delete_link_fields passes a stored link_url value to a file-deletion operation without restricting the resolved path to an intended directory. The disabled-by-default deletion option must be enabled, and an administrator must permanently delete the submitted link; deleting wp-config.php enables code execution.

The record

CVE
CVE-2026-18855
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
Community Events Project
Product
Link Library
Classifications
CWE-22, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=7.9.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Community Events Project · Link Libraryversion=0 <=7.9.4

Published CVSS scores

9.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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