CVE-2026-121450
CFNext before 3.1.0 contains a weak cryptographic derivation vulnerability that allows subscription…
- Risk score
- 45/100
- CVSS
- 7.5 v3.1
- Published
- 3 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- CFNext before 3.1.0 contains a weak cryptographic derivation vulnerability that allows subscription link holders to recover the admin password because the subscription UUID is an MD5 of the password with a fixed public salt. Attackers can brute-force the password offline without rate limiting, log into the admin panel…
- Affected
- See advisory
- Fix
- Upgrade the product to 3.1.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.5 high
References
- https://github.com/PAICNI/CFNext
- https://github.com/PAICNI/CFNext/blob/1c7b3d8bed5b06a1449ea28302bb9a648f67e8e1/CFNext-%E6%98%8E%E6%96%87%E7%89%88.js#L12
- https://github.com/PAICNI/CFNext/blob/1c7b3d8bed5b06a1449ea28302bb9a648f67e8e1/CFNext-%E6%98%8E%E6%96%87%E7%89%88.js#L2440
- https://github.com/PAICNI/CFNext/commit/ca8ad82bb7c635f765c82a1cd0c954fd70d81fb7
- https://github.com/PAICNI/CFNext/issues/57
- https://www.vulncheck.com/advisories/cfnext-before-3.1.0-admin-password-recovery-via-md5-derived-subscription-uuid
Original description
CFNext before 3.1.0 contains a weak cryptographic derivation vulnerability that allows subscription link holders to recover the admin password because the subscription UUID is an MD5 of the password with a fixed public salt. Attackers can brute-force the password offline without rate limiting, log into the admin panel, and read stored Trojan, Clash, Telegram and Cloudflare API secrets.
Last activity 3 Nov 2026. Patch Forecast updates every hour.