CVE-2026-55497
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…
Does this matter?
Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.29% probability · 22th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-409, CWE-770
- Source
- security-advisories@github.com
References
- https://github.com/cloudreve/cloudreve/commit/3607f79bb44c35d0be4fa8b6e24c0502b51415a9
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.