CVE-2026-55497
Cloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)
MEDIUM 6.5EPSS 0.5%
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.
- Affected
- cloudreve
- CVSS v3.1 GITHUB
- 6.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.53% chance of exploitation in the next 30 days, 44th percentile
- Published
- 2026-07-31