{"apiVersion":"1.0","identifier":"CVE-2026-55086","description":"Etherpad is a real-time collaborative editor. Prior to 3.1.0, src/node/handler/ImportHandler.ts and src/node/handler/ExportHandler.ts derive temporary filenames from Math.random() and place them in os.tmpdir(). On a host with a shared world-writable temporary directory, a local unprivileged attacker who predicts a filename can precreate a symbolic link to a file writable by the Etherpad process. Subsequent import or export operations can follow the link through fs.writeFile, fs.rename, or document-conversion output and overwrite the target with partially attacker-controlled content. This issue is fixed in version 3.1.0.","publishedAt":"2026-08-19T20:17:17","lastModifiedAt":"2026-08-25T14:16:52","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55086","cvssScore":4.2,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N","epssProbability":0.00122,"riskScore":0.42,"affectedProduct":"Etherpad","affectedVersions":"<3.1.0","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-55086","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-55086","en":"https://www.redsauce.net/en/cves/CVE-2026-55086","fr":"https://www.redsauce.net/fr/cves/CVE-2026-55086","pt":"https://www.redsauce.net/pt/cves/CVE-2026-55086","de":"https://www.redsauce.net/de/cves/CVE-2026-55086","sk":"https://www.redsauce.net/sk/cves/CVE-2026-55086","el":"https://www.redsauce.net/el/cves/CVE-2026-55086"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-55086"}}