CVE-2026-25726
- Source
- https://cve.org/CVERecord?id=CVE-2026-25726
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25726.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-25726
- Aliases
- Published
- 2026-04-03T20:06:21.629Z
- Modified
- 2026-07-08T08:12:41.976493990Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- Cloudreve is vulnerable to Account Takeover via Weak Cryptographic Token Generation (Insecure PRNG Seeding)
- Details
-
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 secretkey, and hashidsalt. 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 secretkey. 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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-338" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25726.json" }- References
Affected packages
Git / github.com/cloudreve/cloudreve
Affected ranges
- Type
- GIT
- Repo
- https://github.com/cloudreve/cloudreve
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "extracted_events": [ { "introduced": "0" }, { "fixed": "4.13.0" } ], "cpe": "cpe:2.3:a:cloudreve:cloudreve:*:*:*:*:*:*:*:*", "source": [ "AFFECTED_FIELD", "CPE_RANGE", "REFERENCES" ] }