{"id":"CVE-2026-77929","title":"ClipBucket v5 before 5.5.3-#182 contains a file upload vulnerability that allows authenticated users to achieve remote code execution by uploading a PHP file with valid image magic bytes through the photo upload endpoint","summary":"ClipBucket v5 before 5.5.3-#182 contains a file upload vulnerability that allows authenticated users to achieve remote code execution by uploading a PHP file with valid image magic bytes through the photo upload endpoint. The FileUpload:…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-434"],"vendor":"MacWarrior","product":"clipbucket-v5","affected":["clipbucket-v5 < 5.5.3-#182"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T16:17:09.460","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77929","references":[{"url":"https://github.com/MacWarrior/clipbucket-v5/commit/61cce55ab26ef88fb782dfde47b44c17c56978cd","label":"disclosure@vulncheck.com"},{"url":"https://github.com/MacWarrior/clipbucket-v5/releases/tag/5.5.3-%23182","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/clipbucket-remote-code-execution-via-photo-upload-endpoint","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-18T15:26:44.912744Z"},"ingestedAt":"2026-09-18T14:43:13.065Z","epss":0.0051,"epssPercentile":0.42362,"slug":"CVE-2026-77929","body":"## Overview\n\nClipBucket v5 before 5.5.3-#182 contains a file upload vulnerability that allows authenticated users to achieve remote code execution by uploading a PHP file with valid image magic bytes through the photo upload endpoint. The FileUpload::manageFile() function in fileupload.class.php fails to update the file extension after MIME validation, allowing an attacker-controlled .php extension to persist on disk and execute as PHP via PHP-FPM when the uploaded file is retrieved.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}