{"id":"CVE-2026-55497","summary":"Cloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)","details":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the built-in thumbnail and avatar image decoders limit compressed file size but do not limit decoded pixel dimensions, allowing an authenticated user to submit a small PNG, JPEG, or GIF that triggers an unbounded allocation and terminates the Cloudreve process through fatal out-of-memory behavior. This issue is fixed in version 4.17.0.","aliases":["GHSA-g9j2-8w95-3vwv"],"modified":"2026-08-02T03:32:10.304598666Z","published":"2026-07-31T03:28:59.171Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55497.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-400","CWE-409","CWE-770"]},"references":[{"type":"WEB","url":"https://github.com/cloudreve/cloudreve/releases/tag/4.17.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55497.json"},{"type":"ADVISORY","url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-g9j2-8w95-3vwv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55497"},{"type":"FIX","url":"https://github.com/cloudreve/cloudreve/commit/3607f79bb44c35d0be4fa8b6e24c0502b51415a9"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cloudreve/cloudreve","events":[{"introduced":"0"},{"fixed":"3607f79bb44c35d0be4fa8b6e24c0502b51415a9"},{"fixed":"d4a145c3ac68f08b9071dec0f2ac025c6dc7362d"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"4.17.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["4.16.1","4.16.0","4.15.0","4.14.1","4.14.0","4.13.0","4.12.1","4.12.0","4.11.1","4.11.0","4.10.1","4.10.0","4.9.2","4.9.1","4.9.0","4.8.0","4.7.0","4.6.0","4.5.1","4.5.0","4.4.1","4.4.0","4.3.0","4.2.0","4.1.3","4.1.2","4.1.1","4.1.0","4.0.0","4.0.0-beta.14","4.0.0-beta.13","4.0.0-beta.12","4.0.0-beta.11","4.0.0-beta.10","4.0.0-beta.9","4.0.0-beta.8","4.0.0-beta.7","4.0.0-beta.6","3.8.3","3.8.2","3.8.1","3.8.0","3.8.0-beta1","3.7.1","3.7.0","3.6.2","3.6.1","3.6.0","3.6.0-beta1","3.5.3","3.5.2","3.5.1","3.5.0","3.5.0-beta.3","3.5.0-beta2","3.5.0-beta1","3.4.2","3.4.1","3.4.0","3.4.0-beta1","3.3.2","3.3.1","3.3.0","3.2.1","3.2.0","3.1.1","3.1.0","3.0.0","3.0.0-rc1","3.0.0-beta3","3.0.0-beta2","3.0.0-beta1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55497.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}