{"id":"CVE-2026-21875","state":"PUBLISHED","title":"ClipBucket v5 Vulnerable to Blind SQL Injection through Channel Comments","description":"ClipBucket v5 is an open source video sharing platform. Versions 5.5.2-#187 and below allow an attacker to perform Blind SQL Injection through the add comment section within a channel. When adding a comment within a channel, there is a POST request to the /actions/ajax.php endpoint. The obj_id parameter within the POST request to /actions/ajax.php is then used within the user_exists function of the upload/includes/classes/user.class. php file as the $id parameter. It is then used within the count function of the upload/includes/classes/db.class. php file. The $id parameter is concatenated into the query without validation or sanitization, and a user-supplied input like 1' or 1=1-- - can be used to trigger the injection. This issue does not have a fix at the time of publication.","publishedAt":"2026-01-07T23:52:18.729Z","updatedAt":"2026-01-08T19:13:03.740Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["MacWarrior clipbucket-v5"],"affected":[{"vendor":"MacWarrior","product":"clipbucket-v5","versions":[{"version":"<= 5.5.2-#187","status":"affected"}]}],"references":["https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-crpv-fmc4-j392"],"weaknesses":["CWE-89"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/21xxx/CVE-2026-21875.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21875","state":"PUBLISHED","datePublished":"2026-01-07T23:52:18.729Z","dateUpdated":"2026-01-08T19:13:03.740Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-05T16:44:16.369Z"},"containers":{"cna":{"title":"ClipBucket v5 Vulnerable to Blind SQL Injection through Channel Comments","descriptions":[{"lang":"en","value":"ClipBucket v5 is an open source video sharing platform. Versions 5.5.2-#187 and below allow an attacker to perform Blind SQL Injection through the add comment section within a channel. When adding a comment within a channel, there is a POST request to the /actions/ajax.php endpoint. The obj_id parameter within the POST request to /actions/ajax.php is then used within the user_exists function of the upload/includes/classes/user.class. php file as the $id parameter. It is then used within the count function of the upload/includes/classes/db.class. php file. The $id parameter is concatenated into the query without validation or sanitization, and a user-supplied input like 1' or 1=1-- - can be used to trigger the injection. This issue does not have a fix at the time of publication."}],"affected":[{"vendor":"MacWarrior","product":"clipbucket-v5","versions":[{"version":"<= 5.5.2-#187","status":"affected"}]}],"references":[{"url":"https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-crpv-fmc4-j392","name":"https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-crpv-fmc4-j392","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-89","lang":"en","description":"CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-01-07T23:52:18.729Z"},"source":{"advisory":"GHSA-crpv-fmc4-j392","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-crpv-fmc4-j392","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-08T19:13:00.934327Z","id":"CVE-2026-21875","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-08T19:13:03.740Z"}}]}}}