CVE-2026-54562: medium-severity vulnerability in cloudreve
Cloudreve: Non-admin remote download users can SSRF loopback/internal services and read imported responses
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.4%
Cloudreve is a self-hosted file management and sharing system. Prior to 4.16.1, Cloudreve's remote download workflow accepts user-supplied URLs at POST /api/v4/workflow/download and passes them to the configured downloader without blocking loopback, localhost, IPv6 localhost, or redirect-to-loopback targets, allowing a non-admin user with remote download permission to fetch internal-only URLs and read the response after it is imported into the user's own files. This issue is fixed in version 4.16.1.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
cloudreve · cloudreveRelated CVEs — cloudreve
In the same product, most dangerous first.
CVE-2026-54560HIGHCloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claimEPSS 0.6%CVE-2026-55497MEDIUMCloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)EPSS 0.5%CVE-2026-79913MEDIUMCloudreve: SSRF guard bypass: checkIP does not decode IPv6-transition wrappers (NAT64, IPv4-compatible, 6to4) reaching internal and cloud-metadata addressesEPSS 0.4%CVE-2026-25726HIGHCloudreve is vulnerable to Account Takeover via Weak Cryptographic Token Generation (Insecure PRNG Seeding)EPSS 0.4%CVE-2026-55495MEDIUMCloudreve: Path Traversal in WOPI PUT_RELATIVE Allows Arbitrary File Creation in Owner AccountEPSS 0.4%CVE-2026-77633HIGHCloudreve: Storage-quota TOCTOU race allows quota bypass and storage-based denial of serviceEPSS 0.4%