{"apiVersion":"1.0","identifier":"CVE-2026-73509","description":"OpenList a file list program that supports multiple storage. Prior to 4.2.4, the authenticated /api/fs/batch_rename handler in server/handles/fsbatch.go authorizes only the source directory produced by user.JoinPath(req.SrcDir) and validates renameObject.NewName with checkRelativePath, but does not validate attacker-controlled renameObject.SrcName, supplied as src_name, before concatenating it with the authorized path and passing the result to fs.Rename. A user with rename permission can use traversal segments in src_name to make path normalization select a file outside the authorized directory and configured base path, resulting in cross-user file integrity loss, limited availability impact, and file-existence disclosure through success or error responses. This issue is fixed in version 4.2.4.","publishedAt":"2026-08-13T15:20:17","lastModifiedAt":"2026-08-13T16:19:05","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73509","cvssScore":7.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L","epssProbability":0.00372,"riskScore":0.79,"affectedProduct":"OpenList","affectedVersions":"<4.2.4","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-73509","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-73509","en":"https://www.redsauce.net/en/cves/CVE-2026-73509","fr":"https://www.redsauce.net/fr/cves/CVE-2026-73509","pt":"https://www.redsauce.net/pt/cves/CVE-2026-73509","de":"https://www.redsauce.net/de/cves/CVE-2026-73509","sk":"https://www.redsauce.net/sk/cves/CVE-2026-73509","el":"https://www.redsauce.net/el/cves/CVE-2026-73509"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-73509"}}