{"id":"CVE-2026-55499","title":"Cloudreve is a self-hosted file management and sharing system","summary":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, a single-file share event-stream subscription resolves the share root to the owner’s parent folder and subscribes to that folder topic, allowing an authentic…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-863"],"vendor":"cloudreve","product":"github.com/cloudreve/Cloudreve/v4","affected":["github.com/cloudreve/Cloudreve/v4 < 4.0.0-20260613030215-0b00dd308f13","github.com/cloudreve/Cloudreve/v3 <= 3.0.0-20250225100611-da4e44b77af4"],"patched":["github.com/cloudreve/Cloudreve/v4 4.0.0-20260613030215-0b00dd308f13"],"published":"2026-07-31","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:51:43.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55499","references":[{"url":"https://github.com/cloudreve/cloudreve/commit/0b00dd308f132d6e6e8476857ef79f4865600bbc","label":"security-advisories@github.com"},{"url":"https://github.com/cloudreve/cloudreve/releases/tag/4.17.0","label":"security-advisories@github.com"},{"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w8x7-h2px-xmq8","label":"security-advisories@github.com"},{"url":"https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w8x7-h2px-xmq8","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-w8x7-h2px-xmq8"}],"tags":["nvd","ghsa","go"],"epss":0.00243,"epssPercentile":0.15704,"aliases":["GHSA-w8x7-h2px-xmq8"],"ecosystem":"go","ingestedAt":"2026-07-24T21:39:14.906Z","slug":"CVE-2026-55499","body":"## Overview\n\nCloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, a single-file share event-stream subscription resolves the share root to the owner’s parent folder and subscribes to that folder topic, allowing an authenticated share recipient to receive names, paths, rename targets, event types, and hashed identifiers for unshared sibling files and folders. This issue is fixed in version 4.17.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-55499)\n\nAffected packages:\n\n- `github.com/cloudreve/Cloudreve/v4 < 4.0.0-20260613030215-0b00dd308f13`\n- `github.com/cloudreve/Cloudreve/v3 <= 3.0.0-20250225100611-da4e44b77af4`\n\nPatched in:\n\n- `github.com/cloudreve/Cloudreve/v4 4.0.0-20260613030215-0b00dd308f13`\n\nSource: https://github.com/advisories/GHSA-w8x7-h2px-xmq8","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}