Broken Link Checker < 2.4.12 - Unauthenticated RCE via Query Variable Injection

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-18937
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-19 06:17:38 UTC
Updated2026-08-19 06:17:38 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: CWE-94 Improper Control of Generation of Code ('Code Injection')

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown Broken Link Checker affected 2.4.12 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/a23b76eb-107d-4e02-8eae-c3c5fa5b003d [email protected] wpscan.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Jakub Herman (en)

CNA: WPScan (en)

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