{"answers":{"affected":"7 open source packages ship an affected version, including github.com/cloudreve/Cloudreve/v3, github.com/cloudreve/Cloudreve and github.com/cloudreve/Cloudreve/v4.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55499 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-55499 is a medium-severity vulnerability in cloudreve, published on 31 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55499 and fix it if it is affected.\n\nWhat it is: CVE-2026-55499 is a medium-severity vulnerability in cloudreve, published on 31 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55499 exists.\n\nAffected packages and fixed versions:\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions; no fix listed\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions up to 3.0.0-20250225100611-da4e44b77af4; no fix listed\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions up to 3.0.0-20250225100611-da4e44b77af4; no fix listed\n- github.com/cloudreve/Cloudreve (Go): affected all versions; no fix listed\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260613030215-0b00dd308f13\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260613030215-0b00dd308f13\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260613030215-0b00dd308f13\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55499/ (Markdown: https://insights.sbomify.com/CVE-2026-55499/index.md)","id":"CVE-2026-55499","markdown":"https://insights.sbomify.com/CVE-2026-55499/index.md","name":"CVE-2026-55499","record":{"aliases":["GHSA-w8x7-h2px-xmq8","GO-2026-6102"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Cloudreve file sharing","requires_auth":"low_privilege","summary":"Authenticated share recipients can view metadata of unshared sibling files due to broken access control in the event stream.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"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.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Cloudreve: Broken Access Control in file event stream: a single-file share recipient is subscribed to the owner's parent folder and receives activity events for unshared siblings","id":"CVE-2026-55499","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":7,"n_references":3,"next":{"headline":"9routers has Exposure of Sensitive Information and Unprotected Database Import/Export, Allowing Complete Credential Theft and Database Takeover","id":"CVE-2026-55500"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve","purl":"pkg:golang/github.com/cloudreve/Cloudreve","source":"GO-2026-6102"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","source":"GO-2026-6102"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["3.0.0-20250225100611-da4e44b77af4"],"package":"github.com/cloudreve/Cloudreve/v3","purl":null,"source":"GHSA-w8x7-h2px-xmq8"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["3.0.0-20250225100611-da4e44b77af4"],"package":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","source":"GHSA-w8x7-h2px-xmq8"},{"ecosystem":"Go","fixed":["4.0.0-20260613030215-0b00dd308f13"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":null,"source":"GHSA-w8x7-h2px-xmq8"},{"ecosystem":"Go","fixed":["4.0.0-20260613030215-0b00dd308f13"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","source":"GHSA-w8x7-h2px-xmq8"},{"ecosystem":"Go","fixed":["4.0.0-20260613030215-0b00dd308f13"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","source":"GO-2026-6102"}],"prev":{"headline":"FileRise Shared Folder Symlink Escape","id":"CVE-2026-55498"},"products":["cloudreve"],"published":"2026-07-31","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-31","vendors":["cloudreve"]},"summary":"Authenticated share recipients can view metadata of unshared sibling files due to broken access control in the event stream.","url":"https://insights.sbomify.com/CVE-2026-55499/"}