CVE-2026-55499

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 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.

Affected Software

Weaknesses

• CWE-863: CWE-863: Incorrect Authorization

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w8x7-h2px-xmq8

References

• https://github.com/cloudreve/cloudreve/security/advisories/GHSA-w8x7-h2px-xmq8
• https://github.com/cloudreve/cloudreve/commit/0b00dd308f132d6e6e8476857ef79f4865600bbc
• https://github.com/cloudreve/cloudreve/releases/tag/4.17.0

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