CVE-2026-55497 — Cloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)
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 deco…
Published: 2026-07-31 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7