{"id":"CVE-2026-18937","state":"PUBLISHED","title":"Broken Link Checker < 2.4.12 - Unauthenticated RCE via Query Variable Injection","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.","publishedAt":"2026-08-19T06:00:20.316Z","updatedAt":"2026-08-19T16:23:42.509Z","severity":{"score":9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown Broken Link Checker"],"affected":[{"vendor":"Unknown","product":"Broken Link Checker","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.4.12","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/a23b76eb-107d-4e02-8eae-c3c5fa5b003d/"],"weaknesses":["CWE-94"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/18xxx/CVE-2026-18937.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18937","state":"PUBLISHED","datePublished":"2026-08-19T06:00:20.316Z","dateUpdated":"2026-08-19T16:23:42.509Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-08-05T12:42:03.011Z"},"containers":{"cna":{"title":"Broken Link Checker < 2.4.12 - Unauthenticated RCE via Query Variable Injection","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Unknown","product":"Broken Link Checker","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.4.12","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/a23b76eb-107d-4e02-8eae-c3c5fa5b003d/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-94 Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-08-19T06:00:20.316Z"},"credits":[{"lang":"en","value":"Jakub Herman","type":"finder"},{"lang":"en","value":"WPScan","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"WPScan CVE Generator"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":9,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-19T15:59:33.299141Z","id":"CVE-2026-18937","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","type":"CWE","lang":"en","description":"CWE-94 Improper Control of Generation of Code ('Code Injection')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-19T16:23:42.509Z"}}]}}}