Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/cloudreve/cloudreve/commit/3607f79bb44c35d0be4fa8b6e24c0502b5
- https://github.com/cloudreve/cloudreve/releases/tag/4.17.0
- https://github.com/cloudreve/cloudreve/security/advisories/GHSA-g9j2-8w95-3vwv
- https://github.com/cloudreve/cloudreve/security/advisories/GHSA-g9j2-8w95-3vwv
FAQ
What is CVE-2026-55497?
CVE-2026-55497 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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, a...
How severe is CVE-2026-55497?
CVE-2026-55497 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55497?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.