Description
The Broken Link Checker WordPress plugin before 2.4.12 does not limit which query variables it accepts from user input on sites using plain permalinks, allowing unauthenticated users to overwrite arbitrary PHP global variables, and to execute arbitrary code on the server when a classic (non-block) is active.
Published: 2026-08-19
Score: 9 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 19 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 19 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-94
Metrics cvssV3_1

{'score': 9.0, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}


Wed, 19 Aug 2026 06:15:00 +0000

Type Values Removed Values Added
Description The Broken Link Checker WordPress plugin before 2.4.12 does not limit which query variables it accepts from user input on sites using plain permalinks, allowing unauthenticated users to overwrite arbitrary PHP global variables, and to execute arbitrary code on the server when a classic (non-block) is active.
Title Broken Link Checker < 2.4.12 - Unauthenticated RCE via Query Variable Injection
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-08-19T16:23:42.509Z

Reserved: 2026-08-05T12:42:03.011Z

Link: CVE-2026-18937

cve-icon Vulnrichment

Updated: 2026-08-19T15:59:27.806Z

cve-icon NVD

Status : Deferred

Published: 2026-08-19T06:17:38.847

Modified: 2026-08-26T16:30:52.723

Link: CVE-2026-18937

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-20T13:30:17Z

Weaknesses