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2 vulnerabilities by cloudreve
CVE-2026-25726 (GCVE-0-2026-25726)
Vulnerability from cvelistv5 – Published: 2026-04-03 20:06 – Updated: 2026-04-04 03:21
VLAI?
Title
Cloudreve is vulnerable to Account Takeover via Weak Cryptographic Token Generation (Insecure PRNG Seeding)
Summary
Cloudreve is a self-hosted file management and sharing system. Prior to version 4.13.0, the application uses the weak pseudo-random number generator math/rand seeded with time.Now().UnixNano() to generate critical security secrets, including the secret_key, and hash_id_salt. These secrets are generated upon first startup and persisted in the database. An attacker can exploit this by obtaining the administrator's account creation time (via public API endpoints) to narrow the search window for the PRNG seed, and use known hashid to validate the seed. By brute-forcing the seed (demonstrated to take <3 hours on general consumer PC), an attacker can predict the secret_key. This allows them to forge valid JSON Web Tokens (JWTs) for any user, including administrators, leading to full account takeover and privilege escalation. This issue has been patched in version 4.13.0.
Severity ?
8.1 (High)
CWE
- CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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CVE-2022-32167 (GCVE-0-2022-32167)
Vulnerability from cvelistv5 – Published: 2022-09-20 14:45 – Updated: 2025-05-29 13:50
VLAI?
Title
Cloudreve - Stored XSS
Summary
Cloudreve versions v1.0.0 through v3.5.3 are vulnerable to Stored Cross-Site Scripting (XSS), via the file upload functionality. A low privileged user will be able to share a file with an admin user, which could lead to privilege escalation.
Severity ?
5.4 (Medium)
CWE
- CWE-79 - Cross-site Scripting (XSS)
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
Credits
Daniel Elkabes
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